Database: Category, Category relation & Bid tables

src/sql/tables/Auction_Category_relation.sql

@@ -0,0 +1,4 @@
+CREATE TABLE IF NOT EXISTS "Auction_Category_relation" (
+	"auction_id"	INTEGER NOT NULL,
+	"category_id"	INTEGER NOT NULL,
+);

src/sql/tables/Bid.sql

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+CREATE TABLE IF NOT EXISTS "Bid" (
+	"id"			INTEGER NOT NULL UNIQUE,
+	"amount"		INTEGER NOT NULL,
+	"auction_id" 	INTEGER NOT NULL,
+	"user_id"		INTEGER NOT NULL,
+	"message"		TEXT NOT NULL DEFAULT '',
+	PRIMARY KEY("id" AUTOINCREMENT)
+);

src/sql/tables/Category.sql

@@ -0,0 +1,6 @@
+CREATE TABLE IF NOT EXISTS "Category" (
+	"id"			INTEGER NOT NULL UNIQUE,
+	"name"			TEXT NOT NULL UNIQUE,
+	"color"			TEXT NOT NULL DEFAULT '#ffffff',
+	PRIMARY KEY("id" AUTOINCREMENT)
+);