You create integrity constraints in the SQL procedure, the DATASETS procedure, or in SCL (SAS Component Language). The constraints can be provided when the data file is created or added to an existing ...

SQL Server allows you to define cascading referential integrity constraints ... To see how these constraints work, I’ll add some data to my tables.

By defining referential constraints, you can set up the database to control the semantic ... Proper database RI ensures data integrity for both planned application programs and for queries in ad hoc ...

We will not discuss this aspect of data integrity in this column ... Triggers can be thought of as an advanced form of rule or constraint that is written using an extended form of SQL. A trigger ...

When I am working with an Oracle database, I still find myself using SQL*Plus ... using these two constraints-related views is one that provides information on referential integrity constraints ...

Want to improve the integrity of your data? Place constraints in the database ... For one, as the name implies, NoSQL databases don't use the standard SQL query language, and use either their own ...

Analyze database contents using basic, intermediate and advanced SQL statement syntax and usage. Demonstrate capability to query data from multiple tables using SQL JOINS. Create and modify database ...

A new potential characteristic of a SAS data set known as integrity constraints has been added for SAS Version 7 or Version 8. Integrity constraints are a set of data validation rules that preserve ...