Author: indiafreenotes

Where clause The WHERE clause is used to filter records. It is used to extract only those records that fulfill…

Data Controlling Language (DCL) helps users to retrieve and modify the data stored in the database with some specified queries.…

The Structure of Create Table Command Table name is Student Column name Data type  Size  Reg_no  varchar2  10  Name  char…

Insert The INSERT INTO statement of SQL is used to insert a new row in a table. There are two…

COMMIT command in SQL is used to save all the transaction-related changes permanently to the disk. Whenever DDL commands such…

Data analysis involves sorting through massive amounts of unstructured information and deriving key insights from it. These insights are enormously…

Open-Source Software It all started with Richard Stallman who developed the GNU project in 1983 which fueled the free software…

Missing Completely at Random (MCAR): The fact that a certain value is missing has nothing to do with its hypothetical…

Data integration involves combining data residing in different sources and providing users with a unified view of them. This process…

Structured data: Structured data is data whose elements are addressable for effective analysis. It has been organized into a formatted…