Many temporary objects are employed in the day-to-day transactions of medium or large OLTP databases. These objects can be temporary tables, temporary variables, session variables,
Category: SQL Server
Default Constraint – SQL Server
The DEFAULT constraint is used to provide a column’s default value. If no alternative value is supplied, that is, if the user leaves the column
Entity Integrity
Entity Integrity ensures that the table contains no duplicate records and that the field that identifies each entry is distinct and never null. The Primary
Data Retrieval in SQL Server
We obtain data from SQL Server tables using the SELECT command, but this command is insufficient because we are not expected to receive the entire
SQL Server CHECK Constraint
In SQL Server, you may create a check constraint in a table to specify the data values that are permitted in one or more columns.
SQL Server – Foreign Key References – With Cascade
A foreign key is a mechanism for ensuring referential integrity in the SQL Server database. A foreign key indicates that values from one table must
Big Data & SQL 