diff --git a/data/CMakeLists.txt b/data/CMakeLists.txt
index 2c1f2047a6..3adcd68257 100644
--- a/data/CMakeLists.txt
+++ b/data/CMakeLists.txt
@@ -45,10 +45,12 @@ set(ALL_SQL_IN "${CMAKE_CURRENT_BINARY_DIR}/all.sql.in")
 set(PROJ_DB "${CMAKE_CURRENT_BINARY_DIR}/proj.db")
 include(sql_filelist.cmake)
 
+set(PROJ_DB_SQL_EXPECTED_MD5 "9a6b21de7b18f68719acb2260c3492fb")
+
 add_custom_command(
   OUTPUT ${PROJ_DB}
   COMMAND ${CMAKE_COMMAND} -E remove -f ${PROJ_DB}
-  COMMAND ${CMAKE_COMMAND} "-DALL_SQL_IN=${ALL_SQL_IN}" "-DEXE_SQLITE3=${EXE_SQLITE3}" "-DPROJ_DB=${PROJ_DB}" "-DPROJ_VERSION=${PROJ_VERSION}" "-DPROJ_DB_CACHE_DIR=${PROJ_DB_CACHE_DIR}"
+  COMMAND ${CMAKE_COMMAND} "-DALL_SQL_IN=${ALL_SQL_IN}" "-DEXE_SQLITE3=${EXE_SQLITE3}" "-DPROJ_DB=${PROJ_DB}" "-DPROJ_VERSION=${PROJ_VERSION}" "-DPROJ_DB_CACHE_DIR=${PROJ_DB_CACHE_DIR}" "-DPROJ_DB_SQL_EXPECTED_MD5=${PROJ_DB_SQL_EXPECTED_MD5}"
     -P "${CMAKE_CURRENT_SOURCE_DIR}/generate_proj_db.cmake"
   COMMAND ${CMAKE_COMMAND} -E copy ${PROJ_DB} ${CMAKE_CURRENT_BINARY_DIR}/for_tests
   DEPENDS ${SQL_FILES} "${CMAKE_CURRENT_SOURCE_DIR}/generate_proj_db.cmake"
diff --git a/data/generate_proj_db.cmake b/data/generate_proj_db.cmake
index fa268cc9f3..96c796d757 100644
--- a/data/generate_proj_db.cmake
+++ b/data/generate_proj_db.cmake
@@ -3,16 +3,48 @@ function(cat IN_FILE OUT_FILE)
   file(APPEND ${OUT_FILE} "${CONTENTS}")
 endfunction()
 
-file(WRITE "${ALL_SQL_IN}" "")
-include(sql_filelist.cmake)
-foreach(SQL_FILE ${SQL_FILES})
-  cat(${SQL_FILE} "${ALL_SQL_IN}")
-endforeach()
-
-# Do ${PROJ_VERSION} substitution
-file(READ ${ALL_SQL_IN} CONTENTS)
-string(REPLACE "\${PROJ_VERSION}" "${PROJ_VERSION}" CONTENTS_MOD "${CONTENTS}")
-file(WRITE "${ALL_SQL_IN}" "${CONTENTS_MOD}")
+# Generates a all.sql.in file from all the individual .sql files, taking
+# into account if extra validation checks must be done before inserting data
+# records
+function(generate_all_sql_in ALL_SQL_IN_FILENAME EXTRA_VALIDATION OUT_MD5)
+    set(PROJ_DB_EXTRA_VALIDATION ${EXTRA_VALIDATION})
+    file(WRITE "${ALL_SQL_IN_FILENAME}" "")
+    include(sql_filelist.cmake)
+    foreach(SQL_FILE ${SQL_FILES})
+      cat(${SQL_FILE} "${ALL_SQL_IN_FILENAME}")
+    endforeach()
+
+    # Compute the MD5 before PROJ_VERSION substitution to avoid updating the
+    # expected MD5 if we just bump the PROJ_VERSION
+    configure_file("${ALL_SQL_IN_FILENAME}" "${ALL_SQL_IN_FILENAME}.tmp" NEWLINE_STYLE UNIX)
+    file(MD5 "${ALL_SQL_IN_FILENAME}.tmp" OUT_MD5_LOCAL)
+    set(${OUT_MD5} "${OUT_MD5_LOCAL}" PARENT_SCOPE)
+
+    # Do ${PROJ_VERSION} substitution
+    file(READ ${ALL_SQL_IN_FILENAME} CONTENTS)
+    string(REPLACE "\${PROJ_VERSION}" "${PROJ_VERSION}" CONTENTS_MOD "${CONTENTS}")
+    file(WRITE "${ALL_SQL_IN_FILENAME}" "${CONTENTS_MOD}")
+endfunction()
+
+generate_all_sql_in("${ALL_SQL_IN}" OFF PROJ_DB_SQL_MD5)
+
+if (NOT "${PROJ_DB_SQL_MD5}" STREQUAL "${PROJ_DB_SQL_EXPECTED_MD5}")
+    message(WARNING "all.sql.in content has changed. Running extra validation checks when building proj.db...")
+
+    set(ALL_SQL_IN_EXTRA_VALIDATION "${ALL_SQL_IN}.extra_validation")
+    generate_all_sql_in("${ALL_SQL_IN_EXTRA_VALIDATION}" ON PROJ_DB_SQL_EXTRA_VALIDATION_MD5)
+
+    set(PROJ_DB_EXTRA_VALIDATION_FILENAME "${PROJ_DB}.extra_validation")
+    file(REMOVE "${PROJ_DB_EXTRA_VALIDATION_FILENAME}")
+    execute_process(COMMAND "${EXE_SQLITE3}" "${PROJ_DB_EXTRA_VALIDATION_FILENAME}"
+                    INPUT_FILE "${ALL_SQL_IN_EXTRA_VALIDATION}"
+                    RESULT_VARIABLE STATUS)
+    if(STATUS AND NOT STATUS EQUAL 0)
+      message(FATAL_ERROR "Build of proj.db from ${ALL_SQL_IN_EXTRA_VALIDATION} failed")
+    else()
+      message(FATAL_ERROR "Update 'set(PROJ_DB_SQL_EXPECTED_MD5 ...)' line in data/CMakeLists.txt with ${PROJ_DB_SQL_MD5} value")
+    endif()
+endif()
 
 if(IS_DIRECTORY ${PROJ_DB_CACHE_DIR})
   set(USE_PROJ_DB_CACHE_DIR TRUE)
diff --git a/data/sql/analyze_vacuum.sql b/data/sql/analyze_vacuum.sql
new file mode 100644
index 0000000000..40c4d38996
--- /dev/null
+++ b/data/sql/analyze_vacuum.sql
@@ -0,0 +1,3 @@
+ANALYZE;
+
+VACUUM;
diff --git a/data/sql/commit.sql b/data/sql/commit.sql
index 1677f9dec2..3b78f962d1 100644
--- a/data/sql/commit.sql
+++ b/data/sql/commit.sql
@@ -11,181 +11,3 @@ CREATE INDEX concatenated_operation_idx ON concatenated_operation(source_crs_aut
 
 -- We don't need to select by auth_name, code so nullify them to save space
 UPDATE usage SET auth_name = NULL, code = NULL;
-
--- Final consistency checks
-CREATE TABLE dummy(foo);
-CREATE TRIGGER final_checks
-BEFORE INSERT ON dummy
-FOR EACH ROW BEGIN
-
-    -- check that view definitions have no error
-    SELECT RAISE(ABORT, 'corrupt definition of coordinate_operation_view')
-        WHERE (SELECT 1 FROM coordinate_operation_view LIMIT 1) = 0;
-    SELECT RAISE(ABORT, 'corrupt definition of crs_view')
-        WHERE (SELECT 1 FROM crs_view LIMIT 1) = 0;
-    SELECT RAISE(ABORT, 'corrupt definition of object_view')
-        WHERE (SELECT 1 FROM object_view LIMIT 1) = 0;
-    SELECT RAISE(ABORT, 'corrupt definition of authority_list')
-        WHERE (SELECT 1 FROM authority_list LIMIT 1) = 0;
-
-    -- check that the auth_name of all objects in object_view is recorded in builtin_authorities
-    SELECT RAISE(ABORT, 'One or several authorities referenced in object_view are missing in builtin_authorities')
-        WHERE EXISTS (
-            SELECT DISTINCT o.auth_name FROM object_view o WHERE NOT EXISTS (
-                SELECT 1 FROM builtin_authorities b WHERE o.auth_name = b.auth_name)
-        );
-
-    -- check that a usage is registered for most objects where this is needed
-    SELECT RAISE(ABORT, 'One or several objects lack a corresponding record in the usage table')
-        WHERE EXISTS (
-            SELECT * FROM object_view o WHERE NOT EXISTS (
-                SELECT 1 FROM usage u WHERE
-                    o.table_name = u.object_table_name AND
-                    o.auth_name = u.object_auth_name AND
-                    o.code = u.object_code)
-            AND o.table_name NOT IN ('unit_of_measure', 'axis',
-                'celestial_body', 'ellipsoid', 'prime_meridian', 'extent')
-            -- the IGNF registry lacks extent for the following objects
-            AND NOT (o.auth_name = 'IGNF' AND o.table_name IN ('geodetic_datum', 'vertical_datum', 'conversion'))
-        );
-
-    SELECT RAISE(ABORT, 'Geodetic datum ensemble defined, but no ensemble member')
-        WHERE EXISTS (
-            SELECT * FROM geodetic_datum d WHERE ensemble_accuracy IS NOT NULL
-            AND NOT EXISTS (SELECT 1 FROM geodetic_datum_ensemble_member WHERE
-                d.auth_name = ensemble_auth_name AND d.code = ensemble_code)
-        );
-
-    SELECT RAISE(ABORT, 'Vertical datum ensemble defined, but no ensemble member')
-        WHERE EXISTS (
-            SELECT * FROM vertical_datum d WHERE ensemble_accuracy IS NOT NULL
-            AND NOT EXISTS (SELECT 1 FROM vertical_datum_ensemble_member WHERE
-                d.auth_name = ensemble_auth_name AND d.code = ensemble_code)
-        );
-
-    SELECT RAISE(ABORT, 'PROJ defines an alias that exists in EPSG')
-        WHERE EXISTS (
-         SELECT * FROM (
-            SELECT count(*) AS count, table_name, auth_name, code, alt_name FROM alias_name
-            WHERE source in ('EPSG', 'PROJ')
-            AND NOT (source = 'PROJ' AND alt_name IN ('GGRS87', 'NAD27', 'NAD83'))
-            GROUP BY table_name, auth_name, code, alt_name) x WHERE count > 1
-        );
-
-    -- test to check that our custom grid transformation overrides are really needed
-    SELECT RAISE(ABORT, 'PROJ grid_transformation defined whereas EPSG has one')
-        WHERE EXISTS (SELECT 1 FROM grid_transformation g1
-                      JOIN grid_transformation g2
-                      ON g1.source_crs_auth_name = g2.source_crs_auth_name
-                      AND g1.source_crs_code = g2.source_crs_code
-                      AND g1.target_crs_auth_name = g2.target_crs_auth_name
-                      AND g1.target_crs_code = g2.target_crs_code
-                      WHERE g1.auth_name = 'PROJ' AND g1.code NOT LIKE '%_RESTRICTED_TO_VERTCRS%' AND g2.auth_name = 'EPSG' AND g2.deprecated = 0 AND (
-                      (g1.interpolation_crs_auth_name IS NULL AND g2.interpolation_crs_auth_name IS NULL) OR
-                      (g1.interpolation_crs_auth_name IS NOT NULL AND g2.interpolation_crs_auth_name IS NOT NULL AND
-                       g1.interpolation_crs_auth_name = g2.interpolation_crs_auth_name AND
-                       g1.interpolation_crs_code = g2.interpolation_crs_code)))
-        OR EXISTS (SELECT 1 FROM grid_transformation g1
-                      JOIN grid_transformation g2
-                      ON g1.source_crs_auth_name = g2.target_crs_auth_name
-                      AND g1.source_crs_code = g2.target_crs_code
-                      AND g1.target_crs_auth_name = g1.source_crs_auth_name
-                      AND g1.target_crs_code = g1.source_crs_code
-                      WHERE g1.auth_name = 'PROJ' AND g1.code NOT LIKE '%_RESTRICTED_TO_VERTCRS%' AND g2.auth_name = 'EPSG' AND g2.deprecated = 0);
-
-    SELECT RAISE(ABORT, 'Arg! there is now a EPSG:102100 object. Hack in createFromUserInput() will no longer work')
-        WHERE EXISTS(SELECT 1 FROM crs_view WHERE auth_name = 'EPSG' AND code = '102100');
-
-    -- check coordinate_operation_view "foreign keys"
-    SELECT RAISE(ABORT, 'One coordinate_operation has a broken source_crs link')
-        WHERE EXISTS (SELECT * FROM coordinate_operation_view cov WHERE
-                      cov.source_crs_auth_name || cov.source_crs_code NOT IN
-                      (SELECT auth_name || code FROM crs_view));
-    SELECT RAISE(ABORT, 'One coordinate_operation has a broken target_crs link')
-        WHERE EXISTS (SELECT * FROM coordinate_operation_view cov WHERE
-                      cov.target_crs_auth_name || cov.target_crs_code NOT IN
-                      (SELECT auth_name || code FROM crs_view));
-
-    -- check that transformations intersect the area of use of their source/target CRS
-    -- EPSG, ESRI and IGNF have cases where this does not hold.
-    SELECT RAISE(ABORT, 'The area of use of at least one coordinate_operation does not intersect the one of its source CRS')
-        WHERE EXISTS (SELECT * FROM coordinate_operation_view v, crs_view c, usage vu, extent ve, usage cu, extent ce WHERE
-                      v.deprecated = 0 AND
-                      (v.table_name = 'grid_transformation' OR v.auth_name NOT IN ('EPSG', 'ESRI', 'IGNF')) AND
-                      v.source_crs_auth_name = c.auth_name AND
-                      v.source_crs_code = c.code AND
-                      vu.object_table_name = v.table_name AND
-                      vu.object_auth_name = v.auth_name AND
-                      vu.object_code = v.code AND
-                      vu.extent_auth_name = ve.auth_name AND
-                      vu.extent_code = ve.code AND
-                      cu.object_table_name = c.table_name AND
-                      cu.object_auth_name = c.auth_name AND
-                      cu.object_code = c.code AND
-                      cu.extent_auth_name = ce.auth_name AND
-                      cu.extent_code = ce.code AND
-                      NOT ((ce.south_lat < ve.north_lat AND ve.south_lat < ce.north_lat) OR
-                          (ce.west_lon < ce.east_lon AND ve.west_lon < ve.east_lon AND
-                              NOT (ce.west_lon < ve.east_lon AND ve.west_lon < ce.east_lon))) );
-    SELECT RAISE(ABORT, 'The area of use of at least one coordinate_operation does not intersect the one of its target CRS')
-        WHERE EXISTS (SELECT * FROM coordinate_operation_view v, crs_view c, usage vu, extent ve, usage cu, extent ce WHERE
-                      v.deprecated = 0 AND
-                      ((v.table_name = 'grid_transformation' AND NOT (v.auth_name = 'IGNF' AND v.code = 'TSG1185'))
-                       OR v.auth_name NOT IN ('EPSG', 'ESRI', 'IGNF')) AND
-                      v.target_crs_auth_name = c.auth_name AND
-                      v.target_crs_code = c.code AND
-                      vu.object_table_name = v.table_name AND
-                      vu.object_auth_name = v.auth_name AND
-                      vu.object_code = v.code AND
-                      vu.extent_auth_name = ve.auth_name AND
-                      vu.extent_code = ve.code AND
-                      cu.object_table_name = c.table_name AND
-                      cu.object_auth_name = c.auth_name AND
-                      cu.object_code = c.code AND
-                      cu.extent_auth_name = ce.auth_name AND
-                      cu.extent_code = ce.code AND
-                      NOT ((ce.south_lat < ve.north_lat AND ve.south_lat < ce.north_lat) OR
-                          (ce.west_lon < ce.east_lon AND ve.west_lon < ve.east_lon AND
-                              NOT (ce.west_lon < ve.east_lon AND ve.west_lon < ce.east_lon))) );
-
-    -- check geoid_model table
-    SELECT RAISE(ABORT, 'missing GEOID99 in geoid_model')
-        WHERE NOT EXISTS(SELECT 1 FROM geoid_model WHERE name = 'GEOID99');
-    SELECT RAISE(ABORT, 'missing GEOID03 in geoid_model')
-        WHERE NOT EXISTS(SELECT 1 FROM geoid_model WHERE name = 'GEOID03');
-    SELECT RAISE(ABORT, 'missing GEOID06 in geoid_model')
-        WHERE NOT EXISTS(SELECT 1 FROM geoid_model WHERE name = 'GEOID06');
-    SELECT RAISE(ABORT, 'missing GEOID09 in geoid_model')
-        WHERE NOT EXISTS(SELECT 1 FROM geoid_model WHERE name = 'GEOID09');
-    SELECT RAISE(ABORT, 'missing GEOID12A in geoid_model')
-        WHERE NOT EXISTS(SELECT 1 FROM geoid_model WHERE name = 'GEOID12A');
-    SELECT RAISE(ABORT, 'missing GEOID12B in geoid_model')
-        WHERE NOT EXISTS(SELECT 1 FROM geoid_model WHERE name = 'GEOID12B');
-    SELECT RAISE(ABORT, 'missing GEOID18 in geoid_model')
-        WHERE NOT EXISTS(SELECT 1 FROM geoid_model WHERE name = 'GEOID18');
-
-    -- check presence of au_ga_AUSGeoid98.tif
-    SELECT RAISE(ABORT, 'missing au_ga_AUSGeoid98.tif')
-        WHERE NOT EXISTS(SELECT 1 FROM grid_alternatives WHERE proj_grid_name = 'au_ga_AUSGeoid98.tif');
-
-    -- check PROJ.VERSION value
-    SELECT RAISE(ABORT, 'Value of PROJ.VERSION entry of metadata tables not substituted by actual value')
-        WHERE (SELECT 1 FROM metadata WHERE key = 'PROJ.VERSION' AND value LIKE '$%');
-
-    -- Only available in sqlite >= 3.16. May be activated as soon as support for ubuntu 16 is dropped
-    -- check all foreign key contraints have an 'ON DELETE CASCADE'
-    -- SELECT RAISE(ABORT, 'FK constraint with missing "ON DELETE CASCADE"')
-    --     WHERE EXISTS (SELECT 1 FROM
-    --             pragma_foreign_key_list(name),
-    --             (SELECT name from sqlite_master WHERE type='table')
-    --             WHERE upper(on_delete) != 'CASCADE');
-
-
-END;
-INSERT INTO dummy DEFAULT VALUES;
-DROP TRIGGER final_checks;
-DROP TABLE dummy;
-
-ANALYZE;
-
-VACUUM;
diff --git a/data/sql/conversion_triggers_hand_written.sql b/data/sql/conversion_triggers_hand_written.sql
new file mode 100644
index 0000000000..c6dfd78d42
--- /dev/null
+++ b/data/sql/conversion_triggers_hand_written.sql
@@ -0,0 +1,9 @@
+
+CREATE TRIGGER conversion_method_check_insert_trigger_orthographic
+INSTEAD OF INSERT ON conversion
+BEGIN
+
+    SELECT RAISE(ABORT, 'insert on conversion violates constraint: bad parameters for Orthographic')
+        WHERE NEW.deprecated != 1 AND NEW.method_auth_name = 'EPSG' AND NEW.method_code = '9840' AND (NEW.method_name != 'Orthographic' OR NEW.param1_auth_name != 'EPSG' OR NEW.param1_code != '8801' OR NEW.param1_name != 'Latitude of natural origin' OR NEW.param1_value IS NULL OR NEW.param1_uom_auth_name IS NULL OR NEW.param1_uom_code IS NULL OR (SELECT type FROM unit_of_measure WHERE auth_name = NEW.param1_uom_auth_name AND code = NEW.param1_uom_code) != 'angle' OR NEW.param2_auth_name != 'EPSG' OR NEW.param2_code != '8802' OR NEW.param2_name != 'Longitude of natural origin' OR NEW.param2_value IS NULL OR NEW.param2_uom_auth_name IS NULL OR NEW.param2_uom_code IS NULL OR (SELECT type FROM unit_of_measure WHERE auth_name = NEW.param2_uom_auth_name AND code = NEW.param2_uom_code) != 'angle' OR NEW.param3_auth_name != 'EPSG' OR NEW.param3_code != '8806' OR NEW.param3_name != 'False easting' OR NEW.param3_value IS NULL OR NEW.param3_uom_auth_name IS NULL OR NEW.param3_uom_code IS NULL OR (SELECT type FROM unit_of_measure WHERE auth_name = NEW.param3_uom_auth_name AND code = NEW.param3_uom_code) != 'length' OR NEW.param4_auth_name != 'EPSG' OR NEW.param4_code != '8807' OR NEW.param4_name != 'False northing' OR NEW.param4_value IS NULL OR NEW.param4_uom_auth_name IS NULL OR NEW.param4_uom_code IS NULL OR (SELECT type FROM unit_of_measure WHERE auth_name = NEW.param4_uom_auth_name AND code = NEW.param4_uom_code) != 'length' OR NEW.param5_auth_name IS NOT NULL OR NEW.param5_code IS NOT NULL OR NEW.param5_name IS NOT NULL OR NEW.param5_value IS NOT NULL OR NEW.param5_uom_auth_name IS NOT NULL OR NEW.param5_uom_code IS NOT NULL OR NEW.param6_auth_name IS NOT NULL OR NEW.param6_code IS NOT NULL OR NEW.param6_name IS NOT NULL OR NEW.param6_value IS NOT NULL OR NEW.param6_uom_auth_name IS NOT NULL OR NEW.param6_uom_code IS NOT NULL OR NEW.param7_auth_name IS NOT NULL OR NEW.param7_code IS NOT NULL OR NEW.param7_name IS NOT NULL OR NEW.param7_value IS NOT NULL OR NEW.param7_uom_auth_name IS NOT NULL OR NEW.param7_uom_code IS NOT NULL);
+
+END;
diff --git a/data/sql/customizations_early.sql b/data/sql/customizations_early.sql
index 08c44b376c..8e1d6357a9 100644
--- a/data/sql/customizations_early.sql
+++ b/data/sql/customizations_early.sql
@@ -6,12 +6,3 @@ INSERT INTO "scope" VALUES('PROJ','SCOPE_UNKNOWN','Not known.',0);
 INSERT INTO celestial_body VALUES('PROJ', 'EARTH', 'Earth', 6378137.0);
 
 INSERT INTO versioned_auth_name_mapping VALUES ('IAU_2015', 'IAU', '2015', 1);
-
-CREATE TRIGGER conversion_method_check_insert_trigger_orthographic
-INSTEAD OF INSERT ON conversion
-BEGIN
-
-    SELECT RAISE(ABORT, 'insert on conversion violates constraint: bad parameters for Orthographic')
-        WHERE NEW.deprecated != 1 AND NEW.method_auth_name = 'EPSG' AND NEW.method_code = '9840' AND (NEW.method_name != 'Orthographic' OR NEW.param1_auth_name != 'EPSG' OR NEW.param1_code != '8801' OR NEW.param1_name != 'Latitude of natural origin' OR NEW.param1_value IS NULL OR NEW.param1_uom_auth_name IS NULL OR NEW.param1_uom_code IS NULL OR (SELECT type FROM unit_of_measure WHERE auth_name = NEW.param1_uom_auth_name AND code = NEW.param1_uom_code) != 'angle' OR NEW.param2_auth_name != 'EPSG' OR NEW.param2_code != '8802' OR NEW.param2_name != 'Longitude of natural origin' OR NEW.param2_value IS NULL OR NEW.param2_uom_auth_name IS NULL OR NEW.param2_uom_code IS NULL OR (SELECT type FROM unit_of_measure WHERE auth_name = NEW.param2_uom_auth_name AND code = NEW.param2_uom_code) != 'angle' OR NEW.param3_auth_name != 'EPSG' OR NEW.param3_code != '8806' OR NEW.param3_name != 'False easting' OR NEW.param3_value IS NULL OR NEW.param3_uom_auth_name IS NULL OR NEW.param3_uom_code IS NULL OR (SELECT type FROM unit_of_measure WHERE auth_name = NEW.param3_uom_auth_name AND code = NEW.param3_uom_code) != 'length' OR NEW.param4_auth_name != 'EPSG' OR NEW.param4_code != '8807' OR NEW.param4_name != 'False northing' OR NEW.param4_value IS NULL OR NEW.param4_uom_auth_name IS NULL OR NEW.param4_uom_code IS NULL OR (SELECT type FROM unit_of_measure WHERE auth_name = NEW.param4_uom_auth_name AND code = NEW.param4_uom_code) != 'length' OR NEW.param5_auth_name IS NOT NULL OR NEW.param5_code IS NOT NULL OR NEW.param5_name IS NOT NULL OR NEW.param5_value IS NOT NULL OR NEW.param5_uom_auth_name IS NOT NULL OR NEW.param5_uom_code IS NOT NULL OR NEW.param6_auth_name IS NOT NULL OR NEW.param6_code IS NOT NULL OR NEW.param6_name IS NOT NULL OR NEW.param6_value IS NOT NULL OR NEW.param6_uom_auth_name IS NOT NULL OR NEW.param6_uom_code IS NOT NULL OR NEW.param7_auth_name IS NOT NULL OR NEW.param7_code IS NOT NULL OR NEW.param7_name IS NOT NULL OR NEW.param7_value IS NOT NULL OR NEW.param7_uom_auth_name IS NOT NULL OR NEW.param7_uom_code IS NOT NULL);
-
-END;
diff --git a/data/sql/final_consistency_checks.sql b/data/sql/final_consistency_checks.sql
new file mode 100644
index 0000000000..54fce61917
--- /dev/null
+++ b/data/sql/final_consistency_checks.sql
@@ -0,0 +1,173 @@
+-- Final consistency checks
+CREATE TABLE dummy(foo);
+CREATE TRIGGER final_checks
+BEFORE INSERT ON dummy
+FOR EACH ROW BEGIN
+
+    -- check that view definitions have no error
+    SELECT RAISE(ABORT, 'corrupt definition of coordinate_operation_view')
+        WHERE (SELECT 1 FROM coordinate_operation_view LIMIT 1) = 0;
+    SELECT RAISE(ABORT, 'corrupt definition of crs_view')
+        WHERE (SELECT 1 FROM crs_view LIMIT 1) = 0;
+    SELECT RAISE(ABORT, 'corrupt definition of object_view')
+        WHERE (SELECT 1 FROM object_view LIMIT 1) = 0;
+    SELECT RAISE(ABORT, 'corrupt definition of authority_list')
+        WHERE (SELECT 1 FROM authority_list LIMIT 1) = 0;
+
+    -- check that the auth_name of all objects in object_view is recorded in builtin_authorities
+    SELECT RAISE(ABORT, 'One or several authorities referenced in object_view are missing in builtin_authorities')
+        WHERE EXISTS (
+            SELECT DISTINCT o.auth_name FROM object_view o WHERE NOT EXISTS (
+                SELECT 1 FROM builtin_authorities b WHERE o.auth_name = b.auth_name)
+        );
+
+    -- check that a usage is registered for most objects where this is needed
+    SELECT RAISE(ABORT, 'One or several objects lack a corresponding record in the usage table')
+        WHERE EXISTS (
+            SELECT * FROM object_view o WHERE NOT EXISTS (
+                SELECT 1 FROM usage u WHERE
+                    o.table_name = u.object_table_name AND
+                    o.auth_name = u.object_auth_name AND
+                    o.code = u.object_code)
+            AND o.table_name NOT IN ('unit_of_measure', 'axis',
+                'celestial_body', 'ellipsoid', 'prime_meridian', 'extent')
+            -- the IGNF registry lacks extent for the following objects
+            AND NOT (o.auth_name = 'IGNF' AND o.table_name IN ('geodetic_datum', 'vertical_datum', 'conversion'))
+        );
+
+    SELECT RAISE(ABORT, 'Geodetic datum ensemble defined, but no ensemble member')
+        WHERE EXISTS (
+            SELECT * FROM geodetic_datum d WHERE ensemble_accuracy IS NOT NULL
+            AND NOT EXISTS (SELECT 1 FROM geodetic_datum_ensemble_member WHERE
+                d.auth_name = ensemble_auth_name AND d.code = ensemble_code)
+        );
+
+    SELECT RAISE(ABORT, 'Vertical datum ensemble defined, but no ensemble member')
+        WHERE EXISTS (
+            SELECT * FROM vertical_datum d WHERE ensemble_accuracy IS NOT NULL
+            AND NOT EXISTS (SELECT 1 FROM vertical_datum_ensemble_member WHERE
+                d.auth_name = ensemble_auth_name AND d.code = ensemble_code)
+        );
+
+    SELECT RAISE(ABORT, 'PROJ defines an alias that exists in EPSG')
+        WHERE EXISTS (
+         SELECT * FROM (
+            SELECT count(*) AS count, table_name, auth_name, code, alt_name FROM alias_name
+            WHERE source in ('EPSG', 'PROJ')
+            AND NOT (source = 'PROJ' AND alt_name IN ('GGRS87', 'NAD27', 'NAD83'))
+            GROUP BY table_name, auth_name, code, alt_name) x WHERE count > 1
+        );
+
+    -- test to check that our custom grid transformation overrides are really needed
+    SELECT RAISE(ABORT, 'PROJ grid_transformation defined whereas EPSG has one')
+        WHERE EXISTS (SELECT 1 FROM grid_transformation g1
+                      JOIN grid_transformation g2
+                      ON g1.source_crs_auth_name = g2.source_crs_auth_name
+                      AND g1.source_crs_code = g2.source_crs_code
+                      AND g1.target_crs_auth_name = g2.target_crs_auth_name
+                      AND g1.target_crs_code = g2.target_crs_code
+                      WHERE g1.auth_name = 'PROJ' AND g1.code NOT LIKE '%_RESTRICTED_TO_VERTCRS%' AND g2.auth_name = 'EPSG' AND g2.deprecated = 0 AND (
+                      (g1.interpolation_crs_auth_name IS NULL AND g2.interpolation_crs_auth_name IS NULL) OR
+                      (g1.interpolation_crs_auth_name IS NOT NULL AND g2.interpolation_crs_auth_name IS NOT NULL AND
+                       g1.interpolation_crs_auth_name = g2.interpolation_crs_auth_name AND
+                       g1.interpolation_crs_code = g2.interpolation_crs_code)))
+        OR EXISTS (SELECT 1 FROM grid_transformation g1
+                      JOIN grid_transformation g2
+                      ON g1.source_crs_auth_name = g2.target_crs_auth_name
+                      AND g1.source_crs_code = g2.target_crs_code
+                      AND g1.target_crs_auth_name = g1.source_crs_auth_name
+                      AND g1.target_crs_code = g1.source_crs_code
+                      WHERE g1.auth_name = 'PROJ' AND g1.code NOT LIKE '%_RESTRICTED_TO_VERTCRS%' AND g2.auth_name = 'EPSG' AND g2.deprecated = 0);
+
+    SELECT RAISE(ABORT, 'Arg! there is now a EPSG:102100 object. Hack in createFromUserInput() will no longer work')
+        WHERE EXISTS(SELECT 1 FROM crs_view WHERE auth_name = 'EPSG' AND code = '102100');
+
+    -- check coordinate_operation_view "foreign keys"
+    SELECT RAISE(ABORT, 'One coordinate_operation has a broken source_crs link')
+        WHERE EXISTS (SELECT * FROM coordinate_operation_view cov WHERE
+                      cov.source_crs_auth_name || cov.source_crs_code NOT IN
+                      (SELECT auth_name || code FROM crs_view));
+    SELECT RAISE(ABORT, 'One coordinate_operation has a broken target_crs link')
+        WHERE EXISTS (SELECT * FROM coordinate_operation_view cov WHERE
+                      cov.target_crs_auth_name || cov.target_crs_code NOT IN
+                      (SELECT auth_name || code FROM crs_view));
+
+    -- check that transformations intersect the area of use of their source/target CRS
+    -- EPSG, ESRI and IGNF have cases where this does not hold.
+    SELECT RAISE(ABORT, 'The area of use of at least one coordinate_operation does not intersect the one of its source CRS')
+        WHERE EXISTS (SELECT * FROM coordinate_operation_view v, crs_view c, usage vu, extent ve, usage cu, extent ce WHERE
+                      v.deprecated = 0 AND
+                      (v.table_name = 'grid_transformation' OR v.auth_name NOT IN ('EPSG', 'ESRI', 'IGNF')) AND
+                      v.source_crs_auth_name = c.auth_name AND
+                      v.source_crs_code = c.code AND
+                      vu.object_table_name = v.table_name AND
+                      vu.object_auth_name = v.auth_name AND
+                      vu.object_code = v.code AND
+                      vu.extent_auth_name = ve.auth_name AND
+                      vu.extent_code = ve.code AND
+                      cu.object_table_name = c.table_name AND
+                      cu.object_auth_name = c.auth_name AND
+                      cu.object_code = c.code AND
+                      cu.extent_auth_name = ce.auth_name AND
+                      cu.extent_code = ce.code AND
+                      NOT ((ce.south_lat < ve.north_lat AND ve.south_lat < ce.north_lat) OR
+                          (ce.west_lon < ce.east_lon AND ve.west_lon < ve.east_lon AND
+                              NOT (ce.west_lon < ve.east_lon AND ve.west_lon < ce.east_lon))) );
+    SELECT RAISE(ABORT, 'The area of use of at least one coordinate_operation does not intersect the one of its target CRS')
+        WHERE EXISTS (SELECT * FROM coordinate_operation_view v, crs_view c, usage vu, extent ve, usage cu, extent ce WHERE
+                      v.deprecated = 0 AND
+                      ((v.table_name = 'grid_transformation' AND NOT (v.auth_name = 'IGNF' AND v.code = 'TSG1185'))
+                       OR v.auth_name NOT IN ('EPSG', 'ESRI', 'IGNF')) AND
+                      v.target_crs_auth_name = c.auth_name AND
+                      v.target_crs_code = c.code AND
+                      vu.object_table_name = v.table_name AND
+                      vu.object_auth_name = v.auth_name AND
+                      vu.object_code = v.code AND
+                      vu.extent_auth_name = ve.auth_name AND
+                      vu.extent_code = ve.code AND
+                      cu.object_table_name = c.table_name AND
+                      cu.object_auth_name = c.auth_name AND
+                      cu.object_code = c.code AND
+                      cu.extent_auth_name = ce.auth_name AND
+                      cu.extent_code = ce.code AND
+                      NOT ((ce.south_lat < ve.north_lat AND ve.south_lat < ce.north_lat) OR
+                          (ce.west_lon < ce.east_lon AND ve.west_lon < ve.east_lon AND
+                              NOT (ce.west_lon < ve.east_lon AND ve.west_lon < ce.east_lon))) );
+
+    -- check geoid_model table
+    SELECT RAISE(ABORT, 'missing GEOID99 in geoid_model')
+        WHERE NOT EXISTS(SELECT 1 FROM geoid_model WHERE name = 'GEOID99');
+    SELECT RAISE(ABORT, 'missing GEOID03 in geoid_model')
+        WHERE NOT EXISTS(SELECT 1 FROM geoid_model WHERE name = 'GEOID03');
+    SELECT RAISE(ABORT, 'missing GEOID06 in geoid_model')
+        WHERE NOT EXISTS(SELECT 1 FROM geoid_model WHERE name = 'GEOID06');
+    SELECT RAISE(ABORT, 'missing GEOID09 in geoid_model')
+        WHERE NOT EXISTS(SELECT 1 FROM geoid_model WHERE name = 'GEOID09');
+    SELECT RAISE(ABORT, 'missing GEOID12A in geoid_model')
+        WHERE NOT EXISTS(SELECT 1 FROM geoid_model WHERE name = 'GEOID12A');
+    SELECT RAISE(ABORT, 'missing GEOID12B in geoid_model')
+        WHERE NOT EXISTS(SELECT 1 FROM geoid_model WHERE name = 'GEOID12B');
+    SELECT RAISE(ABORT, 'missing GEOID18 in geoid_model')
+        WHERE NOT EXISTS(SELECT 1 FROM geoid_model WHERE name = 'GEOID18');
+
+    -- check presence of au_ga_AUSGeoid98.tif
+    SELECT RAISE(ABORT, 'missing au_ga_AUSGeoid98.tif')
+        WHERE NOT EXISTS(SELECT 1 FROM grid_alternatives WHERE proj_grid_name = 'au_ga_AUSGeoid98.tif');
+
+    -- check PROJ.VERSION value
+    SELECT RAISE(ABORT, 'Value of PROJ.VERSION entry of metadata tables not substituted by actual value')
+        WHERE (SELECT 1 FROM metadata WHERE key = 'PROJ.VERSION' AND value LIKE '$%');
+
+    -- Only available in sqlite >= 3.16. May be activated as soon as support for ubuntu 16 is dropped
+    -- check all foreign key contraints have an 'ON DELETE CASCADE'
+    -- SELECT RAISE(ABORT, 'FK constraint with missing "ON DELETE CASCADE"')
+    --     WHERE EXISTS (SELECT 1 FROM
+    --             pragma_foreign_key_list(name),
+    --             (SELECT name from sqlite_master WHERE type='table')
+    --             WHERE upper(on_delete) != 'CASCADE');
+
+
+END;
+INSERT INTO dummy DEFAULT VALUES;
+DROP TRIGGER final_checks;
+DROP TABLE dummy;
diff --git a/data/sql/versioned_auth_name_mapping.sql b/data/sql/versioned_auth_name_mapping.sql
new file mode 100644
index 0000000000..ebfb2b55a8
--- /dev/null
+++ b/data/sql/versioned_auth_name_mapping.sql
@@ -0,0 +1,3 @@
+--- This file has been generated by scripts/build_db.py. DO NOT EDIT !
+
+INSERT INTO "versioned_auth_name_mapping" VALUES('IAU_2015','IAU','2015',1);
diff --git a/data/sql_filelist.cmake b/data/sql_filelist.cmake
index cf6af07eb9..2b95192958 100644
--- a/data/sql_filelist.cmake
+++ b/data/sql_filelist.cmake
@@ -1,9 +1,25 @@
 set(SQL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/sql")
+
+set(SQL_FILES_CONSISTENCY_CHECKS_TRIGGERS
+  "${SQL_DIR}/consistency_checks_triggers.sql"
+  "${SQL_DIR}/conversion_triggers.sql"
+  "${SQL_DIR}/conversion_triggers_hand_written.sql"
+)
+
+# When setting PROJ_DB_EXTRA_VALIDATION=OFF, we defer the insertion of check triggers
+# until the very end to save build time. We also entirerly skip running
+# final_consistency_checks.sql.
+# Typical build time with PROJ_DB_EXTRA_VALIDATION=ON: 60 seconds
+# Typical build time with PROJ_DB_EXTRA_VALIDATION=OFF: 3.7 seconds
+
 set(SQL_FILES
   "${SQL_DIR}/begin.sql"
   "${SQL_DIR}/proj_db_table_defs.sql"
-  "${SQL_DIR}/consistency_checks_triggers.sql"
-  "${SQL_DIR}/conversion_triggers.sql"
+)
+if (PROJ_DB_EXTRA_VALIDATION)
+  list(APPEND SQL_FILES ${SQL_FILES_CONSISTENCY_CHECKS_TRIGGERS})
+endif()
+list(APPEND SQL_FILES
   "${SQL_DIR}/customizations_early.sql"
   "${SQL_DIR}/metadata.sql"
   "${SQL_DIR}/unit_of_measure.sql"
@@ -46,3 +62,9 @@ set(SQL_FILES
   "${SQL_DIR}/nkg_post_customizations.sql"
   "${SQL_DIR}/commit.sql"
 )
+if (NOT PROJ_DB_EXTRA_VALIDATION)
+  list(APPEND SQL_FILES ${SQL_FILES_CONSISTENCY_CHECKS_TRIGGERS})
+else()
+  list(APPEND SQL_FILES "${SQL_DIR}/final_consistency_checks.sql")
+endif()
+list(APPEND SQL_FILES "${SQL_DIR}/analyze_vacuum.sql")