কম্পিউটার ডাটাবেজ বিষয়ক বহুনির্বাচনী প্রশ্ন ও উত্তর – ০৬

1. ………………….. is the collection of memory structures and Oracle background processes that operates against an Oracle database.
A) Database
B) Instance
C) Tablespace
D) Segment

2. A ………………………… is a logical grouping of database objects, usually to facilitate security, performance, or the availability of database objects such as tables and indexes.
A) tablespace
B) segments
C) extents
D) blocks

3. A tablespace is further broken down into …………………
A) tablespace
B) segments
C) extents
D) blocks

4. ……………………….. is a contiguous group of blocks allocated for use as part of a table, index, and so forth.
A) tablespace
B) segment
C) extent
D) block

5. ……………… is the smallest unit of allocation in an Oracle database.
A) Database
B) Instance
C) Tablespace
D) Database Block

6. An Oracle ………………………..is a set of tables and views that are used as a read-only reference about the database.
A) Database dictionary
B) Dictionary table
C) Data dictionary
D) Dictionary

7. A data dictionary is created when a …………………. created.
A) Instance
B) Segment
C) Database
D) Dictionary

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8. An Oracle object type has two parts the …………………. and …………………….
A) Instance and body
B) Segment and blocks
C) Specification and body
D) Body and segment

9. By, default, Oracle object types are ………………………
A) INSTANTIABLE
B) NOT INSTANTIABLE
C) FINAL
D) OVERRIDING

10. A method modifier tells Oracle that new subtypes may not override a method is called …………….
A) INSTANTIABLE
B) NOT INSTANTIABLE
C) FINAL
D) OVERRIDING

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ANSWERS:

1.B) Instance
2.A) tablespace
3.B) segments
4.C) extent
5.D) Database Block
6.C) Data dictionary
7.C) Database
8.C) Specification and body
9.A) INSTANTIABLE
10.C) FINAL

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