Read this SQL ... tables using AND keywords in the WHERE clause. You can also use such a combination of tables to restrict your results without actually returning columns from every table. For ...

When you create a database table, you have the option to specify a DEFAULT value. Using default values on database columns helps to insulate database design issues from application code.

Designing an appropriate set of indexes can be one of the more troubling aspects of developing efficient relational database applications ... read data from the table space. For example, suppose that ...

Recursion is implemented in standard SQL-99 using common table expressions (CTEs). DB2, Microsoft SQL Server, Oracle and PostgreSQL all support recursive queries using CTEs. Note that Oracle also ...

SQL Server 2016 and Azure SQL Database both give you tables that automatically ... Some things are taken care of for you: If you alter the schema of a temporal table (by adding a new column, for ...