Computer Knowledge

Database Management Systems

5,543 Questions

Database Management Systems (DBMS) form the core framework for data storage, retrieval, and security in modern software applications. Concepts such as the E-R model, backup planning, SQL integration, and big data architecture are essential for computer knowledge sections. This hub offers a comprehensive set of practice questions to master DBMS fundamentals and advanced database operations.

E-R Model ConceptsBackup and RecoverySQL Server UpgradesJDBC and ODBCBig Data CharacteristicsData VirtualizationOracle Database

Database Management Systems Questions

Multiple choice
  1. Local coordinator

  2. Global coordinator

  3. Database server

  4. Client

  5. Shared mode

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This node participating in the session tree sends all of the distributed transaction's SQL statements, remote procedure call and so forth to the directly reference nodes.

Multiple choice
  1. Proxy archived log backups

  2. Recovery through Resetlogs

  3. Automatic datafiles creation

  4. Detection of failure

  5. Disk topology and automatic performance tuning

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This feature of the RMAN describes the contents of the backup sets that define which files are multiplexed and the level of multiplexing.

Multiple choice
  1. Media management application

  2. Media management catalog

  3. Recovery catalog database

  4. Duplicate database

  5. Registration

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

You can create this component of the RMAN environment that contains the RMAN metadata for multiple target database unless you are using RMAN with a physical standby database.

Multiple choice
  1. Spreadsheet

  2. Relational Database Management System

  3. Database Management System

  4. Object Relational Database Management System

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An ORDBMS offers all the features of a RDBMS plus it offers the benefits of creating user defined objects and types. Oracle offers the user an option to not only create and maintain relationships between different tables but also user defined data types such as Varrays, Types, Nested Table etc..

Multiple choice
  1. Connect

  2. Admin

  3. Create User

  4. Resource

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The resource role allows a user to create and modify new objects like Table, View etc. It is the basic permission that a user requires to create objects. When a user in Oracle is created, it is a two step process - first a new user is created by issuing the create user statement which is create user username identified by password;For example : create user amit identified amit_manager; Once the user is created , it is assigned permissions so that it can carry on with its work. To grant permissions, the create grant statement is issued. For example : Grant connect,resource to amit. This statement will permit the user amit to login(connect) and create objects(resource) 

Multiple choice
  1. This model can have many -to -many relationships among its entities.

  2. This model use SQL language to store the database.

  3. This model does not suffer any insertion anomaly.

  4. This model suffers from deletion anomaly.

  5. Both (2) and (4).

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is true as deletion of any records in the parent can cause the deletion of that in the child table too.