Added db schema.

database/schema.sql

@@ -0,0 +1,16 @@
+CREATE TABLE quotes (
+                        id_quote INTEGER PRIMARY KEY,
+                        content TEXT NOT NULL,
+                        score INTEGER NOT NULL,
+                        uuid TEXT NOT NULL UNIQUE
+);
+CREATE INDEX uuid on quotes (uuid);
+CREATE TABLE indexes (
+                         id_index INTEGER PRIMARY KEY,
+                         word TEXT NOT NULL UNIQUE
+);
+CREATE TABLE indexes_quotes (
+                                id_index INTEGER,
+                                id_quote INTEGER
+);
+CREATE INDEX index_quote on indexes_quotes (id_index, id_quote);