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External failure : A failure can also result because of an external cause, such as earthquakes, fire, floods, etc. The database must be duly backed up to avoid troubles occurring d
Two Phase Locking (2PL) The two-phase locking protocol having of two phases: Phase 1 : The lock acquisition phase : If a transaction T needs to read an object, it wants to
Databases and data warehouses both are databases and both contains number of rows and columns of tables containing data. Data warehouse is really different from databases because d
What are the technique to define a schema completely ? A schema is completely define by DDL and DML query language.
What is an index? An index is a structure that helps to place desired records of a relation quickly, without probing all records.
let us consider a table having 2200 records and the fixed size of the table to be considered as 25.then how many numbers of table is requredto perform horizontal fragmentation
Data slice explanation
Develop a database broker framework to implement a persistence mechanism for the domain objects involved in the use case dealt with in Question 2. a. Specify the attribute type
What are the basic objects of the data dictionary? Tables Domains Data elements Structures Foreign Keys
what are the purposes of dbms in details
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