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What is meant by log-based recovery?
The most widely used structures for recording database changes is the log. The log is a sequence of log records, recording all the update activities in the database. There are various types of log records.
A super key is an attribute or set of attributes used to recognize the records uniquely in a relation. For instance, in the Relation PERSON defines earlier PERSON_ID is a super
Explain Hierarchical Model ? Hierarchical Model - It was established to model several kinds of hierarchical organizations which exist in the real world. It uses tree structur
gyan gurukul is a software company that provides software related solution.
what is database management system? & why it is required?
Problem 1 What is a Data Warehouse? Mention its advantages 2 Explain the Top-Down and Bottom-up Data Warehouse development Methodologies 3 What is Data Transformation? Ex
How many types of Views are there? There are Four types of views:- Database View Help View Projection View Maintenance View
A relationship set is a set of relationships of the similar type. For example, let consider the relationship among two entities sets course and student. Collection of all the in
Define access time. Access time is the time from when a read or write request is issued to when data transfer starts.
What is an Operand? The data on which the operation is to be performed is known as an Operand
#questiRegional Gardens has many nurseries, including Wagga Wagga, Bathurst, Albury, Orange, and Dubbo. Each nursery is known by its campus code, eg WW, B, A, O and D respectively.
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