1) In a database Table, the each category of information Is called A. Field B,Record C Tuple D. All Of Above 2) What do you mean by one-to-many relationship between Teacher and Class taờle: B. Many classes may have many teachers have many A. One class may have many teachers classes One teacher can have many classes D. Many teachers may 3) It is used to establish an association between related tables. A. Records B. Relationship C. Primary Key D. Line

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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choose the correct answer
2) What do you mean by one-to-many relationship between Teacher and Class table?
Choose the letter of the correct answer:
1) In a database Table, the each category of information Is called
A. Field B, Record
С uple
.D. All Of Above
A. One class may have many teachers
B. Many classes may have many teachers
(COne teacher can have many classes D. Many teachers may have many classes
17
3) It is used to establish an association between related tables.
30
A. Records
B Relationship C. Primary Key D. Line
4) Which of the following operations requires the relations to be union compatible?
A. INTERSECTION
BUNION
C. DIFFERENCE
D. ALL OF THESE
5) A table can have only one
(A) Secondary key (B Primary key (C) Unique key (D) Alternate key
6) Which of the following is not a database model
A. Object Oriented Database Model
B. Relational Database Model
LC Network Database Model
D. None
7) Relational Algebra is
(A)Data Definition Language
(B) Meta Language
(C) Procedural query Language
8) Which of the following relational algebraic operations is not from set theory?
(D) None of the above
(B) Intersection (C) Cartesian Product (D) Select
YA Union
between tables.
9) The stage of designing a database is when we create
A. Query B. Join CRelationship D. None of These
attribute.
10) In an E-R diagram double lines ellipse indicate
B)Multiple Values (C) Derived (D) None of the above
(A) Specialization
Transcribed Image Text:2) What do you mean by one-to-many relationship between Teacher and Class table? Choose the letter of the correct answer: 1) In a database Table, the each category of information Is called A. Field B, Record С uple .D. All Of Above A. One class may have many teachers B. Many classes may have many teachers (COne teacher can have many classes D. Many teachers may have many classes 17 3) It is used to establish an association between related tables. 30 A. Records B Relationship C. Primary Key D. Line 4) Which of the following operations requires the relations to be union compatible? A. INTERSECTION BUNION C. DIFFERENCE D. ALL OF THESE 5) A table can have only one (A) Secondary key (B Primary key (C) Unique key (D) Alternate key 6) Which of the following is not a database model A. Object Oriented Database Model B. Relational Database Model LC Network Database Model D. None 7) Relational Algebra is (A)Data Definition Language (B) Meta Language (C) Procedural query Language 8) Which of the following relational algebraic operations is not from set theory? (D) None of the above (B) Intersection (C) Cartesian Product (D) Select YA Union between tables. 9) The stage of designing a database is when we create A. Query B. Join CRelationship D. None of These attribute. 10) In an E-R diagram double lines ellipse indicate B)Multiple Values (C) Derived (D) None of the above (A) Specialization
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