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Explain the Deferred Update
The deferred update methods do not physically update the database on disk till after a transaction reaches its commit point; after that the updates are recorded in the database. Alternatively, deferred update methods postpone any actual updating of the database on disk until a transaction arrives its commit point. Transaction force-writes the log to disk previous to recording the updates in the database.
I need to Map an E-R diagram to a relational schema
Describe Dynamic Model. The dynamic model specifies allowable sequences of changes to the objects from an object model. It contains event trace diagrams describing scenarios. A
Synonyms and Indexes Some of the essential properties of indexes are: An Index is a schema Object Indexes can be formed explicitly or automatically Indexes are m
#question.what is mapping constraints and types?.
Fragmentation: It is definite as partitioning of a relation into various fragments.Every fragment can be stored at a dissimilar site.
Problem 1. Create a PL/SQL program to insert data into student table and display the details of the student having Reg.No 1010 Writing a PL/SQL program to Insert data
Explain the cartesian product in Database Management System
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E-R model uses this symbol to represent weak entity set ? A Doubly outlined rectangle symbol is used to represent weak entity set.
Describe in brief about DBMS ?
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