Tag: databases

Questions Related to databases

SELECT ROUND(TRUNC(MOD(1600,10),-1),2)
technology databases

  1. ERROR

  2. 0

  3. 1

  4. 0.00

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Correct Option: B

What can you create to restrict user access to a table?
technology databases

  1. Index

  2. synonym

  3. view

  4. trigger

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Correct Option: C

What can be used in a SELECT statement to obtain search criteria for the SELECT statement?
technology databases

  1. HAVING clause

  2. ORDER BY clause

  3. Subquery

  4. GROUP BY clause

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Correct Option: C

What database object is used to increase performance for accessing data within a database?
technology databases

  1. Roles

  2. Sequences

  3. Synonyms

  4. Index

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Correct Option: D

Which clause of the CREATE SEQUENCE statement will cause the sequence to continue to generate numbers even after the maximum limit is reached?
technology databases

  1. MAXVALUE

  2. MINVALUE

  3. CYCLE

  4. INCREMENT BY

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Correct Option: C

Which datatypes are alphanumeric?
technology databases

  1. Number

  2. Blob

  3. Char

  4. Raw

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Correct Option: C

How do you execute an anonymous block within SQL*Plus?
technology databases

  1. exec command

  2. / command

  3. execute command

  4. None of these

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Correct Option: B

Where can NOT a subquery be used within a SQL statement that is in a PL/SQL block?
technology databases

  1. WHERE

  2. FROM

  3. INSERT

  4. UPDATE

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Correct Option: B

What tasks are you able to perform within a PL/SQL block?
technology databases

  1. DELETE

  2. CREATE

  3. UPDATE

  4. ALTER

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Correct Option: A,C

Which database model allows you to store and execute a PL/SQL program as part of an object?
technology databases

  1. Hierarchical

  2. Relational

  3. Object Relational

  4. Network

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Correct Option: C