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in case of functional dependencies how we get the higher normal form.
What is Foreign Key Foreign Key: Sometimes we may have to work with an attribute that does not have a primary key of its own. To recognize its rows, we have to use the primar
What is conceptual schema? The schemas at the view level are known as subschema that describe dissimilar views of the database.
While using extract datasets it is required to have a special workarea for interface False. It is not required to have a special workarea for interface
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
What is multiple relationship ?
Nested Queries Let us see some more complex queries in this section. Sub-queries: Some of the basic concerns of sub-queries are: A sub-query is a SELECT statemen
Design a generalization–specialization hierarchy for a motor-vehicle sales company. The company sells motorcycles, passenger cars, vans, and buses. Justify your placement of attrib
Eliminate Redundant Data In the "Database Relation" above, the primary key is made up of the D-ID and the Emp-ID. The database-name relies only on the D-ID. The similar databas
difference between internal schema and external schema in DBMS
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