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Mohamad Eskandarane Questions
11022 Questions
Choose the option that correctly explains in words, the function of the following relational algebra expression
Database
2022-07-16
Answers
30
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1080
Two Statements
Database
2022-07-16
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30
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40
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1097
What is the method of specifying a primary key in a schema description?
Database
2022-07-16
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30
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1096
An attribute is a __________ in a relation
Database
2022-07-16
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30
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1073
What does the “x” operator do in relational algebra
Database
2022-07-16
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1585
What action does ⋈ operator perform in relational algebra
Database
2022-07-16
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30
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1618
What is a foreign key
Database
2022-07-16
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1104
What is an Instance of a Database
Database
2022-07-16
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1144
Choose the correct statement regarding superkeys
Database
2022-07-16
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30
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1051
Which of the following normal forms does not exist
Database
2022-07-16
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30
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1095
State true or false: If a relational schema is in _______ NF and A is a subset of R and B is also a subset of R then it is that A is a superkey is a trivial multi values dependency
Database
2022-07-16
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30
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1097
The _______ is a set of all functional and multi values dependencies implied by a set of functional dependencies
Database
2022-07-16
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1079
Functional dependencies are sometimes referred to as ________
Database
2022-07-16
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30
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1067
Total:
11022
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