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PostgreSQL NamePostgreSQL Naming ConventionsThis article teaches the reader how to name different components in a database such as the tables, sequences, primary keys, constraints, and indexes. PostgreSQL StringPostgreSQL string_agg FunctionThis article discusses using the string_agg() function to concatenate strings of a string field in a PostgreSQL group by query. PostgreSQL FunctionNEXTVAL Function in PostgreSQLThis article teaches about the functionality of the NEXTVAL() function in PostgreSQL. PostgreSQL OperatorDifferences Between the IN and ANY Operators in PostgreSQLThis article talks about the differences between the IN and the ANY operators in PostgreSQL. PostgreSQL DeleteForeign Key ON DELETE CASCADE in PostgreSQLThis article explains how to perform ON DELETE/CASCADE in PostgreSQL. PostgreSQL UsernameDefault Username/Password for PostgreSQL Server in Rails 4This article explains the default settings for the user in PostgreSQL Server in Rails 4. Postgres DateTimeDifference Between Timestamp With and Without Time Zone in PostgreSQLThis article discusses the types of timestamps in PostgreSQL and demonstrates their differences. We can create two types of timestamps in Postgres - with and without a time zone. If you save the timestamp with time zone, you can convert the time into another time zone. PostgreSQL KeyForeign Key Syntax in PostgreSQLThis article describes how to correctly make a foreign key relationship in PostgreSQL. Postgres StatementThe if Statement in PostgreSQLThis tutorial shows the reader how to write queries that contain if statements to execute different operations.