Database - Introduction to Database - Discussion

Its name is an acronym for COmmon Business-Oriented Language

It is an object Oriented Language.

What is an enterprise-class database system?

Basically oracle is considered enterprise-class database system.

What use of COBOL programs?

COBOL is a programming language that reads like regular English and is often used for business and administrative purposes. The name means Common Business Oriented Language. COBOL is referred to as a legacy language, which means it is in a format that is no longer used or supported by new systems.

The question asked here is about Database Systems in an academic sense rather than their enterprise class implementations. Following are the parts of *ANY* database system:

The database schema.
Schema objects.
Indexes.
Tables.
Fields and columns.
Records and rows.
Keys.
Relationships.
Data type.

Note that any kind of programs/applications which act upon database are not the part of database system. COBOL programs are essentially the programs written in COBOL programming language.

Clearly they are not part of the database system. Be it any program written in any language (C++, JAVA, C#, COBOL or Python) it will not be the part of a database system.

How? Please explain me.

Well said, Thanks @Mahesh.