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.
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Database Management Systems Questions
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to move data from one data source to another
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powerful ETL tool
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To design various kind of reports
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to provide business information to a wider audience within an organization
A,B,D
Correct answer
Explanation
SQL Server Integration Services (SSIS) is primarily designed as an ETL (Extract, Transform, Load) tool used to move and transform data between various data sources. Designing and presenting reports to a wider audience is the primary function of SQL Server Reporting Services (SSRS), not SSIS.
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Critical transactions
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Account Lockout
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Page load times for all application pages
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Login/Logout events for users
C
Correct answer
Explanation
Logging page load times for all application pages is inappropriate for continuous logging because it generates excessive volume of low-value data, degrades performance, and makes it difficult to find meaningful security events. Continuous logging should focus on security-relevant events like logins, lockouts, and critical transactions.
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Data is validated against a list of values that are known to be valid
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Data is validated against a list of values that are known to be invalid
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Both of the above
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None of the above
A
Correct answer
Explanation
To understand what "White List" data validation means, the user needs to know the basics of data validation and filtering.
"White List" data validation refers to the process of validating data against a list of values that are known to be valid. This means that the data is filtered and compared against a pre-defined list of acceptable values. If the data matches any of the values on the list, it is considered valid. If it does not match any of the values on the list, it is considered invalid.
Option A is the correct answer, as it accurately describes what "White List" data validation means.
Option B is incorrect, as it describes the opposite of what "White List" data validation means.
Option C is incorrect because it includes option B, which is incorrect.
Option D is also incorrect because "White List" data validation is a real concept and option A accurately describes it.
The Answer is: A
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Oracle
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MySQL
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Both of the above
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Oracle, MySQL, Sybase, DB2
C
Correct answer
Explanation
The security API supports Oracle and MySQL database codecs for SQL injection protection. Option D incorrectly includes Sybase and DB2, which are not among the default supported databases in this particular API.
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Oracle
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MySQL
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Both of the above
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Oracle, MySQL, Sybase, DB2
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Oracle
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MySQL
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Both of the above
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Oracle, MySQL, Sybase, DB2
C
Correct answer
Explanation
The security API (OWASP ESAPI) contains built-in codecs for both Oracle (OracleCodec) and MySQL (MySQLCodec) to prevent SQL injection attacks. While other databases can also be supported via custom implementations, these two databases are explicitly covered by default SQL codecs provided in the core library.
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File System based repository
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Database based repository
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Both
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Others
A
Correct answer
Explanation
TeamSite is built on a specialized virtual file system (called Tempesta or TeamSite File System - TSFS) rather than a traditional relational database. This allows developers and editors to interact with assets using native file system operations instead of SQL databases.
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Logically
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Physically
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Both of the above
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None of the above
C
Correct answer
Explanation
A schema describes a database both logically (data structures, relationships, constraints) and physically (storage details, indexing, file organization). This dual description helps understand how data is organized conceptually and how it's stored on disk. Neither logical nor physical alone is complete.
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Physical
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Logical
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Both
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None
B
Correct answer
Explanation
Sets define a logical relationship between record types in IDMS, establishing parent-child connections that determine how records are accessed and navigated, not how they are physically stored.
B,C
Correct answer
Explanation
In SAP Business Objects Universes for OLAP sources, direct access is supported for MultiProviders (MP) and Infocubes. These are valid SAP BW/BI data structures that can be directly accessed in universe design. ODS and Infoset are not typically direct-access OLAP sources in this context.
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Hierarchies
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Variables
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Display attributes
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Basic key Figures
A,C,D
Correct answer
Explanation
When creating a Business Objects universe on an SAP BW Infocube, the BI metadata features available include Hierarchies, Display Attributes, and Basic Key Figures. These are standard metadata objects exposed from Infocube structures. Variables are not part of the base Infocube metadata in this context.
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Personal
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Secured
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Shared
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None
B
Correct answer
Explanation
To export an OLAP universe to the Business Objects repository, a Secured connection must be used. Personal connections are local to the machine, while Secured connections are stored in the repository and allow sharing. Universe exports require repository access via secured connections.
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Sum
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Database Delegated
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Percentage
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None
B
Correct answer
Explanation
For key figures involving percentages in Business Objects universes, the 'Database Delegated' aggregation function must be used. This ensures percentage calculations are performed at the database level rather than aggregated incorrectly (summing percentages would produce wrong results).
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Data Time Ready
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Define The Relationship
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Design Time Repository
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Digital Time Radio
C
Correct answer
Explanation
DTR stands for Design Time Repository in the SAP NetWeaver context. It stores development-time metadata and version information for SAP development objects. The other options - Data Time Ready, Define The Relationship, and Digital Time Radio - are not valid SAP technology terms.
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all data is lost
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only the connection closes
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all applications running on the server remain active
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the session becomes available on the server.
D
Correct answer
Explanation
When a disconnected session ends, the session state becomes available on the server for reconnection. The applications remain running, and data is preserved. Options A and C are incorrect because data and applications persist. Option B is incorrect because more than just the connection closes - the session state changes.