TNPSC 2017

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TNPSC 2017

mohit jain asked Jun 25, 2022

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TNPSC 2017
___________ operator is used to retain the unmatched rows of relations when they joined. (a) Outer Join (b) Inner Join (c) Natural Join (d) Self Join

___________ operator is used to retain the unmatched rows of relations when they joined.(a) Outer Join(b) Inner Join(c) Natural Join(d) Self Join

mohit jain

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mohit jain asked Jun 25, 2022

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admin asked Apr 1, 2020

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NIELIT 2017 OCT Scientific Assistant A (IT) - Section B: 27
Which of the following desired features are beyond the capability of relational algebra? Aggregate Computation Multiplication Finding transitive closure All of the above

Which of the following desired features are beyond the capability of relational algebra?Aggregate ComputationMultiplicationFinding transitive closureAll of the above

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admin asked Apr 1, 2020

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admin asked Mar 30, 2020

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NIELIT 2017 July Scientist B (IT) - Section B: 54
Cross Product is a Unary Operator Ternary Operator Binary Operator Not an operator

Cross Product is aUnary OperatorTernary OperatorBinary OperatorNot an operator

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admin asked Mar 30, 2020

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go_editor asked Mar 24, 2020

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UGC NET CSE | January 2017 | Part 3 | Question: 9
Let $pk(R)$ denotes primary key of relation $R$. A many-to-one relationship that exists between two relations $R_1$ and $R_2$ can be expressed as follows: $pk(R_2)\rightarrow pk(R_1)$ $pk(R_1)\rightarrow pk(R_2)$ $pk(R_2)\rightarrow R_1 \cap R_2$ $pk(R_1)\rightarrow R_1 \cap R_2$

Let $pk(R)$ denotes primary key of relation $R$. A many-to-one relationship that exists between two relations $R_1$ and $R_2$ can be expressed as follows: $pk(R_2)\righta...

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go_editor asked Mar 24, 2020

mohit jain · Answer 1 · 2023-01-24T01:56:14+0000

Answer is B

https://selfstudy365.com/qa/the-materialization-approach-of-query-evaluation-includes-from-root-t-5ead4b3df60d5d77912daca2

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