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What are the DBMS languages? Explain.
Ans: a) Data Definition Languages (DDL): It is employed to specify database schema for example CREATE DROP statements etc.
b) Data Manipulation language (DML): DML is employed to express database queries and update. For example: SELECT, UPDATE, DELETE statements, etc.
what is un ordered and ordered file managment?
Describe Parameteric end users? Parametric end users might be given update access, but are commonly not permitted to change the structure of data.
Define blocks? The database system resides eternally on non-volatile storage, and is into fixed-length storage units known as blocks.
Complexity : A distributed DBMS that is available, reliable, and secure is inherently more difficult than a centralised DBMS. Though, adequate data replication is essential to have
NEED ER DIAGRAM WITH MINIMUM ENTITY AND RELATIONSHIP of Hospital Management System
please i request for your assistance in developing a case-based online phone repair
Super keys of a relation can have extra attributes. Candidate keys are minimal super key, i.e. such a key have no extraneous attribute. An attribute is known as extraneous if even
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
what is multivalued dependency
What is Asterisk in SQL? Asterisk (*): In SQL, the columns for all the tables and views in the FROM clause will be displayed.
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