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Database Systems Certification Exam Tests

Database Systems Practice Test 271

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The Trivia MCQ: *The relational-algebra operations can be grouped together into a;* "Relational Algebra" App (iOS & Android) with answers: Relational-algebra operation; Relational-algebra query; Relational-algebra expression; Relational-algebra function; for bachelor's degree in computer science. Study Formal Relational Query Languages Questions and Answers, Apple Book to download free sample for computer science programs.

MCQ 1351:

*The relational-algebra operations can be grouped together into a*

- relational-algebra query
- relational-algebra operation
- relational-algebra expression
- relational-algebra function

c

MCQ 1352:

*The practice of generalization is a simple inversion of*

- Inheritance
- Dependency
- Specialization
- Relationships

c

MCQ 1353:

*In A4 search, if only one record is retrieved, the time cost calculated will be same as that for*

- A1
- A2
- A3
- A5

b

MCQ 1354:

*A cross-tabulation table is different from*

- Relational tables
- Irrelational tables
- Query tables
- Structured tables

a

MCQ 1355:

*Some implementations of SQL also allow us to test whether the result of a comparison is unknown, by the clauses*

- Is unknown
- Unknown
- Is not unknown
- Both A and C

d

Functions and Procedures MCQs

JDBC and JAVA MCQs

Java Database Connectivity (JDBC) MCQs

Structure of Relational Model MCQs

Functional Dependency Theory MCQs

Database Triggers MCQs

Relational Operations MCQs

Nested Subqueries MCQs

DBMS: Selection Operation MCQs

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