While it is best to create and build the link between tables before the data flow begins, new tables or other existing tables may need
Category: RDBMS
Define Foreign Key In Different Ways – SQL Server
A foreign key (FK) is a column or group of columns used to create and enforce a link between data in two tables in order
Dropping multiple columns in MySQL
Is it possible to drop numerous columns from a table at once in MySQL? The answer is Yes. Here is the syntax and example: ALTER
FLUSH TABLES – MySQL
The FLUSH statement can be used to clean or reload various internal caches, flush tables, or acquire locks. Flush means reset. The command FLUSH TABLES
Flush Hosts – MySQL
The FLUSH statement can be used to clean or reload various internal caches, flush tables, or acquire locks. Flush means reset. MySQL will clear the
Flush Privileges – MySQL
After creating the user and granting the necessary permissions, reload mysqladmin or restart the MySQL service to enforce the changes. Aside from that, the flush
Big Data & SQL 