CS403 CS403: Database Management Systems Solved MCQ Bank Solved by vuZs team
SQL stands for ______________.
I - Structured Query Language
II – Standard Query Language
lll- Status Query Language
Both I and II
Making a change to the conceptual schema of a database but not affecting the existing external schema is an example of
Physical data independence.
Logical data independence.
Logical data independence
Logical data independence provides the independence in a way that
changes in conceptual model do not af fect the external views. Or
simply i t can be stated at the Immunity of external level f rom
changes at conceptual level .
SQL data types do not have support for storing multi-media objects directly.
Truncate is an alternative of Delete command.
What happens if the WHERE clause is omitted from a DELETE statement?
All records from the table are deleted
No record from the table will be deleted
First record of the table will be deleted
The statement will not be executed and will give a syntax error
Query Analyzer is used to practice SQL in MS-Access and MS-SQL Server.
Which of the following is used to retrieve and insert information from database?
Both DML and DDL
SQL commands that allow for the manipulation of data in the database, such as SELECT, INSERT, DELETE, and UPDATE.
Which of the following can not be included into CREATE TABLE statement?
Which of the following is NOT a DDL command?
Which of the following SQL statements used to control access to the data and to the database?
Both GRANT and REVOKE
A relational database is
one that consists of two or more tables
a database that is able to process tables, queries, forms, reports and macros
one that consists of two or more tables that are joined in some way
the same as a flat file database
Which model operates at the lowest level of abstraction?
Select correct option:
A________is used to maintain a connection between the users of the database system.
none of the given
A f i le server is used
to maintain a connection between the users of the database system.
Each cl ient of the network runs its own copy of the DBMS and the
database resides on the f i le server .
A collection of concepts that can be used to describe the structure of a database
Data model is a set or collection of construct used for creating a database and producing designs for the databases
Data about data is metadata
Database is a data structure that stores metadata, i.e. data about data. More generally we can say an organized collection of information.
A primary key is an attribute (or set of attributes) that has been chosen for an entity, whose values are used to uniquely identify a particular instance of an entity.
None of the given
Which of the following is INCORRECT statement concerning the database design process?
During requirements collection and analysis phase, one can gather the data requirements of database users.
By referring to a high level data model, it is possible to understand the data requirements of the users, entity types, relationships and constraints.
Transformation of the high level data model into the implementation data model is called logical design or data model mapping.
During the logical design phase of internal storage structures, access paths and file organization for the database files are specified.
These things are done at physical design stage not at logical design stage. At logical design stage we are concerned about schema structures.
Which feature of database provides conversion from inconsistent state of DB to a consistent state ensuring minimum data loss?
User accessible catalog
Who is responsible for authorizing access to the database, for coordinating and monitoring its use?
A primary key is an attribute (or set of attributes) that has been chosen for an entity, whose values are used to uniquely identify a particular instance of an entity. True orFalse?
None of the given
Which of the following describes the job of a database administrator?
Development, implementation operation of the physical database
Creation of the system catalog
Monitoring and controlling database security and authorization: Setting up controls to ensure the quality and integrity of data
All of the above
Which of the following is NOT a component of a DFD?
Relationship between external entities
The Entity Relation Model models
Entities, Relationships and Processes
Entities and Relationships
Data about data is database
None of the Above
Database is a data structure that stores metadata, i.e. data about data. More generally we can say an organized collection of information
A relational database system is based on the concept(s) of:
A network of data records
Tables, rows and columns
A tree-like structure of data
most commercial DBMS are based on the record-based data models, like Hierarchical, Network or Relational.
Data Manipulation Language (DML) is the set of commands used to maintain and query a database including updating, inserting, modifying and retrieving data.