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HSAM stands for ……….

A. Hierarchic Standard Access Method

B. Hierarchic Sequential Access Method

C. Hierarchic Sequential and Method

D. Hierarchic Standard and Method

Correct Answer :

B. Hierarchic Sequential Access Method


Related Questions

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………………… approach reduces time and effort required for design and lesser risk in database management.

A. Single global database

B. Multiple databases

C. Top-down approach

D. None of the above

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Isolation of the transactions is ensured by

A. Transaction management

B. Application programmer

C. Concurrency control

D. Recovery management

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In an ER model,_____ is described in the database by storing its data.

A. Entity

B. Attribute

C. Relationship

D. Notation

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Which of the following is not a logical database structure?

A. Chain

B. Network

C. Tree

D. Relational

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What is data integrity?

A. It is the data contained in database that is non redundant.

B. It is the data contained in database that is accurate and consistent.

C. It is the data contained in database that is secured.

D. It is the data contained in database that is shared.

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A list consists of last names, first names, addresses and pin codes. If all people in the list have the same last name and same pin code a useful key would be

A. the pin code

B. the last name

C. the compound key first name and last name

D. Tr from next page

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______contains information that defines valid values that are stored in a column or data type.

A. Default

B. Index

C. Rule

D. View

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What is a disjoint less constraint?

A. It requires that an entity belongs to no more than one level entity set.

B. The same entity may belong to more than one level.

C. The database must contain an unmatched foreign key value.

D. An entity can be joined with another entity in the same level entity set.

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4

An advantage of the database management approach is

A. data redundancy increases

B. data is dependent on programs

C. data is integrated and can be accessed by multiple programs

D. none of the above

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A ______ module is typically designed so that it will run on a user workstation or personal computer.

A. Software

B. Server

C. Program

D. Client

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The part of a database management system which ensures that the data remains in a consistent state is

A. authorization and integrity manager

B. buffer manager

C. transaction manager

D. file manager

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Which of the following relational algebra operations do not require the participating tables to be union-compatible?

A. Union

B. Intersection

C. Difference

D. Join

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4

The default level of consistency in SQL is

A. repeatable read

B. read committed

C. read uncommitted

D. serializable

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The one guideline to be followed while designing the database is

A. A database design may be ambiguous.

B. It should avoid/reduce the redundancy.

C. Unrelated data should be in the same table so that updating the data will be easy.

D. An entity should not have attributes.

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In a multi-user database, if two users wish to update the same record at the same time, they are prevented from doing so by

A. jamming

B. password

C. documentation

D. record lock

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In SQL the word natural can be used with

A. inner join

B. full outer join

C. right outer join

D. all of the above

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Dependency preservation is not guaranteed in

A. BCNF

B. 3NF

C. PJNF

D. DKNF

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4

HSAM stands for ……….

A. Hierarchic Standard Access Method

B. Hierarchic Sequential Access Method

C. Hierarchic Sequential and Method

D. Hierarchic Standard and Method

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4

Which is the best file organization when data is frequently added or deleted from a file?

A. Sequential

B. Direct

C. Index sequential

D. None of the above

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4

Relations produced from an E-R model will always be

A. First normal form.

B. Second normal form.

C. Third normal form.

D. Fourth normal form.

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In b-tree the number of keys in each node is than the number of its children.

A. one less

B. same

C. one more

D. half

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Checkpoints are a part of

A. Recovery measures.

B. Security measures.

C. Concurrency measures.

D. uthorization measures.

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What are the desirable properties of a decomposition

A. Partition constraint.

B. Dependency preservation.

C. Redundancy.

D. Security.

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______defines the structure of a relation which consists of a fixed set of attribute-domain pairs.

A. Instance

B. Program

C. Schema

D. Super Key

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If both the functional dependencies : X�Y and Y�X hold for two attributes X and Y then the relationship between X and Y is

A. M:N

B. M:1

D. 1:M

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Which of the following is not a consequence of non-normalized database?

A. Update Anomaly

B. Insertion Anomaly

C. Redundancy

D. Lost update problem

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Cascading rollback is avoided in all protocol except

A. strict two-phase locking protocol.

B. tree locking protocol

C. two-phase locking protocol

D. validation based protocol.

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If a transaction T has obtained an exclusive lock on item Q, then T can

A. read Q

B. write Q

C. both read and write Q

D. write Q but not read Q

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DFD stands for

A. Data Flow Document

B. Data File Diagram

C. Data Flow Diagram

D. Non of the above

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The ____ operator joins two or more conditions and displays rows only if that rows data satisfies all conditions specified.

A. OR

B. AND

C. NOT

D. ALL