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GyanMul Prep · NEB +2 · Grade 12

Computer Science (Grade 12)

Everything on these tabs is Computer Science (Grade 12) only, within NEB +2 Grade 12.

Grade 12 subjects

GyanMul Prep · NEB +2 · Grade 12

Computer Science (Grade 12)

Everything on these tabs is Computer Science (Grade 12) only, within NEB +2 Grade 12.

Grade 12 subjects

Chapter 1 of 26 · Computer Science (Grade 12)

Introduction to Database and DBMS

8 topics
Board exam — Database Management System, 8 marks across 4 chapters
12 solved questions

What a database is and why a file-based system was not enough: the DBMS as the layer between the data and everyone who wants it, and what it buys — and costs.

Practise this chapter Read solved questions

Topics

What the syllabus defines for this chapter

1Data, information and the database; the need for a database
2File-based systems and their limitations
3Database Management System: definition and components
4Advantages and disadvantages of a DBMS over a file-based system
5Database users: administrator, designer, application programmer and end user
6Three-level architecture: internal, conceptual and external schema
7Data independence: logical and physical
8Centralised and distributed databases