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Define page.
The database is partitioned into some number of fixed-length blocks, which are referred to as pages.
Explain trivial dependency? Functional dependency of the form α ->β. is trivial if α C β. Trivial functional dependencies are satisfied by all the relations.
what would go in order patient#, patient name, patien address, surgeon#, surgeon name, surgery date, surgery type, drug admin
State the definition of association An association is a structural relationship which specifies that objects of one thing are connected with objects of another. In UML, asso
Define instance and schema? Instance: Collection of data kept in the data base at a particular moment is known as an Instance of the database. Schema: The o
List out various user authorization to modify the database schema. a) Index authorization b) Resource authorization c) Alteration authorization d) Drop authorizat
What is relational model feature? A relational model feature is much more data independence than some other database models.
Explain natural join? Natural Join - Similar as equi-join except in which the join attributes (having similar names) are not involved in the resulting relation. Only one sets
Multi-Key File Organisation In this part, we will introduce two basic file Organisation schemes that permit records to be accessed by more than one key field, therefore, allowi
What is a candidate key? Minimal super keys are known as candidate keys.
Describe relational model? Structure of relational data base Basic structure Database schema Keys Schema diagram Query languages
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