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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.
Related fields in a database are grouped in which form? Related data fields in a database are grouped to form a data record. (A record is a collection of related fields)
discuss the purpose of the concurrency control?
The entity type STUDENT has the following attributes: Student Name, Address, Phone, Age, Activity, and No of Years. Activity represents some campus-based student activity, and No o
Explain the concepts of relational data model? Relational Data Model - The relational model was first introduced through Prof. E.F. Codd of the IBM Research in the year 1970
Illustrate different types of Locks in SQL Server. There are three kinds of locks in SQL Server i.) Shared locks - These are used for operations which don't allow any update
Explain Candidate Key and Super Key A super key is a set of one or more than attributes that, taken collectively, permits us to identify uniquely a tuple in the relation. Wher
how to construct labelled precedence graph for view serialiability.please explain insteps with one solved examples
The database files accept the actual data and are typically the biggest in size. Depending on their shape, the tables for all the user operation can go in one database file-but
explain concept of decomposition?
Change the city of First Bank Corporation to ‘New Delhi' UPDATE COMPANY SET CITY = ‘New Delhi' WHERE COMPANY_NAME = ‘First Bank Corporation';
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