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Describe domain constraints.
Domain constraints contain entity integrity and referential integrity. The domain is a set of values that might be assigned to an attribute. The entity integrity rule states that no part of a primary key cannot be null. Referential integrity states that every foreign key value must match a primary key value or be null.
Explain ODBC? ODBC - Open DataBase Connectivity (ODBC) enable the integration of SQL along with a general-reasons programming language.
What is vertical fragmentation? Vertical fragmentation divides the relation by decomposing the scheme R of relation r.
why are older data models are being replaced by new data models
Define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a pictori
What is document scanning and imaging? Document scanning and imaging, or digital archiving, is the method of scanning a document into a digital image to archive and retrieve a
Define Aggregate functions and what aggregate functions supported by the MySQL To calculate a summary value from a set of individual values and uses one of the functions known
what is object-identity
Distributed Database Management System
What is a function group? A function group is a collection of logically related modules that share global data with every other. All the modules in the group are contained in
Which data manipulation command combines the records from one or more tables ? JOIN data manipulation command combines the records from one or more tables.
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