What is Aggregate Function? An aggregate function in a database is a function that operates on a set of values and returns a single aggregated value as a result. These…

In RDBMS, both the GROUP BY and HAVING clauses are used in combination with aggregate functions to perform operations on grouped data. However, they are used for different purposes in…

The fill factor in the Microsoft SQL server is the setting that specifies the percentage of space on each leaf-level page to be filled with data when the index is…

In RDBMS, we can use the INSERT INTO statement to insert one or more records into a table. When the database adds a new row, it checks for all the…

The SQL-like operator is used in WHERE the clause that compares a column value to similar values using wildcard operations. LIKE operator is used to filtering records and pattern matching…

CREATE TABLE statement is used to create a new table in a database. This statement is applicable in many databases like Oracle, Microsoft SQL Server, and MySQL. There are two…

A transaction is a logical atomic unit of database operations that is executed as a single unit. It can have a single or multiple statements. SQL-based transaction satisfies the ACID-based…

What is ETL? ETL stands for Extract, Transform and Load. It is used for extracting data from different sources and transforming it and loading the data for the end-users to…