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What are the states of transaction? The states of transaction are:- a) Active b) Partially committed c) Failed d) Aborted e )Committed f) Terminated
What do you understand by transitive dependencies? Define with an example any two problems that can take place in the database if transitive dependencies are available in the datab
explain participation constraints with examples
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
Implementing software control To implement software control designer must redesign strategy of state event model which is present in dynamic model. There are three basic ap
what is relationship inheritance and attribute inheritance
entity relationship diagram for online examination system
Answer SQL Queries to extract data from data tables and questions on mapping conceptual data models into relational data model.
What does conceptual design work? A conceptual design involves modelling independent of the DBMS.
Define the five basic operators of relational algebra? Five basic operators of relational algebra are: 1. Union (∪∪∪∪) - Selects tuples which are in either P or Q or in both
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