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Physical Records These are the records that are stored in the secondary storage devices. For the database relation, physical records are the group of fields kept in adjacent me
Partial Key : It is a group of attributes that can uniquely identify small entities and that are related to same base entity. It is sometime named as Discriminator. Altern
Explain about primary key Primary Key: It is one of the candidate keys that are taken to be the recognizing key for the entire table. E.g. although there are two candidate ke
explain concept of decomposition?
What is Specialization? Specialization: Specialization permits you to describe new types of information (new structural types or latest domains of information), although reusin
How persistent programming languages differ from traditional programming languages? Database languages vary from traditional programming languages in that they directly manipul
Data Mining 1. What is data mining? Write Data Mining applications. 2. Explain OLAP? Write the benefits of OLAP. 3. What are the key features of a Data Warehouse? 4. W
define lock conversion
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
Define physical and logical data independence. How does this architecture help in achieving these? Data independence entails that change in one view must not need a change in t
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