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Question: One of the tasks a database management system must perform is to ensure that the data is still intact in the face of software and hardware failure. This task is known
What is the need for triggers? Triggers are useful mechanisms for alerting humans or for starting particular tasks automatically when particular conditions are met.
sir we want er diagram of bank management system in this main menu option as new account,deposit amount,withdraw amount,all acount holder list,modify account,close account
data models are being replaced over years. Reasons and why does that happen?
how oracle can be used
In this practical assignment, we will run through a complete database application development cycle, starting with the schema design, from an initial data import to database applic
Depending upon the rules we have found, we can classify the locks into two types. Shared Lock: A transaction might be acquiring shared lock on a data item in order to read it
Consider the relation PERSON. If you want to display details of persons having age less than or equal to 30 than the select operation will be used as follows: σ AGE The resu
What is B-Tree? A B-tree eliminates the redundant storage of search-key values .It permits search key values to appear only once.
How to reduce data redundency
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