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in general, should every table in a database have an identity field to use as a PK?

Why are foreign keys more used in theory than in practice?

sql database foreign-keys

Display dynamic image from database or remote source with p:graphicImage and StreamedContent

Find duplicate column value in sqlite

database sqlite

How to count number of occurrences for all different values in database column?

sql database postgresql

Postgres Alter Column Integer to Boolean

database postgresql

H2 database error: Database may be already in use: "Locked by another process"

java database h2

Why is "close existing connections to destination database" grayed out on SQL Server 2012 Management Studio?

Generate insert script for selected records?

android.database.CursorIndexOutOfBoundsException: Index 0 requested, with a size of 0

android database cursor

django set DateTimeField to server's current time

python database django

Clone MySQL database

mysql database mysqldump

Postgresql: how to create table only if it does not already exist?

sql database postgresql

Optimistic locking in MySQL

Explaining why "Just add another column to the DB" is a bad idea, to non programmers [closed]

SELECT and UPDATE multiple records in oriento / orientjs and transaction in waterline

Laying out a database schema for a calendar application

At what point is it worth using a database?

Using a database table as a queue

Mongoose: Schema vs Model?