database Assume that you have the following relation; R(a,b,c) a   b  c ---------- 1  A   F 2  B   M 3  T   F 4   R  M 5   A  F Then the cardinality of the selection operation on R with predicate c= 'f' will be = ----- Select one: a. 0 b. 5 c. Null d. 3

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A: Introduction : This question involves analyzing a relation from a restaurant point-of-sale (POS)…

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A: Set operation are used to perform operation on its elements such as union, minus, intersect etc.

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A: Answer to the above question is in step2.

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A: Answer given below Given R(x, y, z) be a relation

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A: ans given below

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A: The answer is

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A: Answer to the given question: In the use case diagram, actor X has added to actor Y some specific…

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A:

Q: dentify the set of functional dependencies in the relation instance CAR shown n

A: Actually, data base is used to stores the data.

Q: 5 A 1 R 4 6 B 2 6 8 B 4 9 7 с 5 The full outer join has 3 NULLS. he left outer join has 4 NULLS. S…

A: In this question two tables are given as the R and SIt is asked to perform full outer joinright…

Q: Suppose that R is the following relation on the set A = {1,2,3,4}: R = A × A – {(1, 1), (2, 2), (3,…

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Q: An instance of a relation   A. is serializable   B. is dynamic   C. is static   D. is never empty

A: the answer is given below:-

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A: Answer is

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A: Answer :-

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A: Given : R(A, B, C, D, E, F) B --&gt; C, DD --&gt; F

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A:

Q: 1.A known relationship mode of R (U, F), U= (A, B, C, D, E, G); F={AB->C, D->EG, C->A, BE->C, BC->D,…

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A: An ordered pair is a pair of objects.

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A: SUMMARY: -Hence, we discussed all the points

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A: given the following graph represent a relation which of the following is true.

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A: The answer is

Intermediate SQL Concepts

A query is a request for data or information from one or more database tables. This information could be presented in the form of pictorials, graphs, or complicated findings which helps in easy interpretation. Structured Query Language (SQL) is the most widely used programming language for retrieving and organizing data from relational databases. Collection of tables with rows and columns is referred to as a database. SQL is the language of databases. It makes it easier to extract specific data from databases, which can then be used for analysis.