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Describe integrity and security?
a) Domain constraint
b) Referential integrity
A value that appears in one relation for a given set of attributes also appear for a particular set of attributes in another relation. This condition is known as referential integrity.
a) Referential integrity and E-R models
b) Database modification
c) Referential integrity in SQL
Example : Create a sequence named SEQSS that starts at 105, has a step of 1 and can take maximum value as 2000. CREATE SEQUENCE SEQSS START WITH 105 INCREMENT BY 1 MAX VA
i want to database for online assignment submission system
Define hot swapping? Hot swapping permits the removal of faulty disks and changes it by new ones without turning power off. Hot swapping decreases the mean time to repair.
Class Diagram A class diagram is required to support functional necessity of system. In a static design view, class diagram is used to model vocabulary of the system, simple c
I need help with data warehousing and business intelligence course project about designing a data warehouse for a jewelry company that does not have one
A table joined with itself is called ? A table joined with itself is known as self join table. Normal 0 false false false EN-IN X-NONE X-NONE
What are the three classes of SQL expression? SQL expression consists of three clauses: Select From Where
Define the term Domain. For each n every attribute there is a set of permitted values known as the domain of that attribute.
Different stages of DDLC ?
What are the ways in which the variable-length records arise in database systems? Storage of many record types in a file. Record types that permit variable lengths for one o
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