12th Computer Science Book back one mark answer pdf 2022-2023

Here we given an example chapter of 12th Computer Science Book back one mark answer

What is the acronym of DBMS?

a) DataBase Management Symbol b) Database Managing System

c) DataBase Management System d) DataBasic Management System

A table is known as

a) tuple b) attribute                             c) relation                              d)entity

Which database model represents parent-child relationship?

a) Relational b) Network             c) Hierarchical                     d) Object

Relational database model was first proposed by

a) E F Codd b) E E Codd             c) E F Cadd                            d) E F Codder

What type of relationship does hierarchical model represents?

a) one-to-one b) one-to-many             c) many-to-one                      d) many-to-many

Who is called Father of Relational Database from the following?

a) Chris Date b)Hugh Darween             c) Edgar Frank Codd          d) Edgar Frank Cadd

Which of the following is an RDBMS?

a) Dbase b) Foxpro             c) Mongo DB                         d) SQLite

What symbol is used for SELECT statement?

a) σ b) Π                                         c) X                                         d) Ω

A tuple is also known as

a) table b) row                                    c) attribute                             d) field

Who developed ER model?

a) Chen b) EF Codd             c) Chend                                 d) Chand

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