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What is transaction?
Transaction is a unit of program implementation that accesses and possibly updated several data items.
Group By clauses • It is used to group database tuples on the basis of definite common attribute value like as employees of a department. WHERE clause still can be used
Question 1 What is data mining? Write Data Mining applications Question 2 What is OLAP? Write the benefits of OLAP Question 3 What is Business Intelligence? Explai
UNION If R1 and R2 are two union compatible relations then R3 = R1 ∪ R2 is the relation having tuples that are either in R1 or in R2 or in both. In case, R3 will have tuples
Define database management system? Database management system (DBMS) is a set of interrelated data and a combination of programs to access those data.
sql is relationally complete-justify
There are a number of possible solutions to the open ended brief. One of the simple ones is shown here without the PKs and FKs. It is important to think of how a number of tasks
What is inheritance? Define it in detail? Inheritance Inheritance can be at the levels of types, or at the level of tables we first consider inheritance of types, then i
The functions of DBA ?
What is conceptual schema? The schemas at the view level are known as subschema that describe dissimilar views of the database.
Construct a clean ans concise ER diagram for the database indicating the cardinality mapping for Employee management syatem
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