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 technology databases
  1. ROW LEVEL

  2. BLOCK LEVEL

  3. FIELD COMPRESSION

  4. COLUMN LEVEL

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

Teradata's multivalue compression (MVC) operates at the row level, where each column value in a row can be individually compressed based on its characteristics. While data is physically stored in blocks, the compression granularity and decision-making happens at the row/field level, not at column or block level.

Multiple choice technology programming languages
  1. Database server name

  2. Database source name

  3. Data server name

  4. Data source name

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

DSN stands for Data Source Name, which is a configuration that stores connection information to a database in Windows ODBC (Open Database Connectivity). It contains parameters like server name, database name, driver, and authentication details needed to establish a connection.

Multiple choice technology programming languages
  1. True

  2. False

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

The statement is false because you cannot directly call Oracle database through ADO (ActiveX Data Objects) without proper Oracle-specific OLE DB providers or ODBC drivers. ADO is a data access technology, but connecting to Oracle specifically requires Oracle's data access components like MSDAORA (Microsoft OLE DB Provider for Oracle) or Oracle's own ODBC drivers.

Multiple choice technology programming languages
  1. Vbrun300.dll

  2. VB6IDE.DLL

  3. VBSCC.DLL

  4. Vbrun6.dll

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

Vbrun300.dll is the Visual Basic 3.0 runtime library required to run VB3 applications on systems that don't have Visual Basic installed. This DLL contains the core runtime functions needed for VB3 programs to execute properly on end-user machines.

Multiple choice technology programming languages
  1. Open Data Base Connectivity

  2. Open Data Base Connection

  3. Oracle Data Base Connectivity

  4. Oracle Data Base Connection

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

ODBC stands for Open Database Connectivity, which is a standard API for accessing database management systems. It's not specific to Oracle.

Multiple choice technology enterprise content management
  1. cmbicmsrvs.ini

  2. cmbclient.ini

  3. cmbicmenv.ini

  4. cmbcmenv.properties

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

The cmbicmenv.ini file stores configuration parameters for the IBM Content Manager library server connection, including database connection credentials.

Multiple choice technology
  1. SQL Warehouse Bulider

  2. Actuate

  3. Business Objects

  4. Data Junction

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

Data Junction is a specialized ETL (Extract, Transform, Load) tool used for data integration and migration. The other options are reporting/BI tools (Actuate, Business Objects) or development tools (SQL Warehouse Builder), not dedicated ETL utilities.

Multiple choice technology
  1. dynamic RDBMS

  2. dataset

  3. IPC stage

  4. None of the above

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

All the listed stages (dynamic RDBMS, dataset, IPC stage) are passive stages in DataStage, meaning they don't actively push/pull data but wait for data to flow through the pipeline. Therefore 'None of the above' is correct - none of them are non-passive.

Multiple choice technology
  1. Stable sort must be set to true

  2. Sort group must include the sort key values

  3. Allow duplicates must be set to False

  4. Unique sort keys must be set to True

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

Setting 'Allow duplicates' to False during sorting ensures that only one record is retained for each unique sort key value, effectively deduplicating the dataset while sorting. A stable sort (option A) preserves relative order of equal elements but doesn't remove duplicates. Sort groups (option B) define grouping behavior, not duplicate handling.

Multiple choice technology
  1. Repository

  2. Data Stage server

  3. Data Stage package installer

  4. None of the above

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

The question asks which items are NOT server components. Since option D 'None of the above' is correct, it means all listed items (Repository, Data Stage server, Data Stage package installer) ARE server components in the DataStage architecture. The question uses double-negative logic.

Multiple choice technology storage
  1. Application

  2. Database

  3. Server

  4. Storage Array

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

In a data center architecture with a storage array, the database is the software component that stores and manages structured information like customer profiles and product catalogs. While the storage array provides physical persistence, the database application logically organizes and manages this information. Servers host the database, and applications use it, but the database itself holds the structured data.

Multiple choice technology
  1. Master data

  2. Transaction data

  3. Hierarchies

  4. Attributes

Reveal answer Fill a bubble to check yourself
A,B,C,D Correct answer
Explanation

SAP BW (Business Warehouse) can extract and load multiple types of data: Master data (static reference data like customers, products), Transaction data (business transactions like sales, orders), Hierarchies (organizational structures), and Attributes (descriptive properties of master data). All four options represent valid data types that SAP BW handles. The claimed answer (A, B, C, D) is correct.

Multiple choice technology
  1. Attributes

  2. Hierarchies

  3. Text

  4. Transaction data

Reveal answer Fill a bubble to check yourself
A,C,D Correct answer
Explanation

In SAP BW, the PSA (Persistent Staging Area) can store various types of master data including Attributes (A) and Texts (C) for descriptive information, as well as Transaction data (D) which is the actual business transaction data. Hierarchies (B) are stored separately in their own tables, not directly in the PSA.

Multiple choice technology testing
  1. Object Repository

  2. Object Identification

  3. Object Restore

  4. Task Plan

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

The Object Repository in QTP/UFT stores test objects along with their properties and values. This centralized storage allows tests to reference objects without hardcoding property values, making tests more maintainable. When object properties change in the application, you only need to update them in the Object Repository.

Multiple choice technology
  1. Data from the target system

  2. Data from the source system

  3. Transport process

  4. Communication process

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

In data warehousing and ETL processes, an extract structure represents data from the source system before transformation and loading into the target. The target system receives data after transformation.