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Database Systems Practice Test 171

# Relational Algebra Quiz Questions with Answers PDF Download - 171

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The Relational Algebra Trivia Questions and Answers PDF (Relational Algebra Quiz Answers PDF e-Book) download Ch. 10-171 to solve Database Systems Practice Tests. Learn Formal Relational Query Languages MCQ Questions PDF, Relational Algebra Multiple Choice Questions (MCQ Quiz) for online certificate programs. The Relational Algebra Trivia App Download: Free learning app for additional basic operations, database languages, database design, nested subqueries, relational algebra test prep for computer information science.

The Trivia MCQ: The generated outputs of relational-algebra expressions do not have identities, which is used for; "Relational Algebra" App (iOS & Android) with answers: Comparison; Reference; Validate; Retrieval; for computer information science. Study Formal Relational Query Languages Questions and Answers, Apple Book to download free sample for free online classes.

## Relational Algebra Quiz with Answers : MCQs 171

MCQ 851:

The generated outputs of relational-algebra expressions do not have identities, which is used for

1. Reference
2. Comparison
3. Validate
4. Retrieval
MCQ 852:

In queries that contain subqueries, a scoping rule is applied for

1. Variable names
2. Function names
3. Correlation names
4. Subquery name
MCQ 853:

In the relational model, the process which involves decisions on what attributes we want to capture in the database, is

1. Conceptual design
2. Initial design
3. Execution design
4. Controlling design
MCQ 854:

A database system provides a language named

1. Data declaration
2. Data definition
3. Data summification
4. Data moderation
MCQ 855:

The pattern generated by the example "_ _ _" would be matching string of

1. Ending with three characters
2. Starting with three characters
3. Exactly three characters
4. At least three characters

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