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Which types of data supported by MySQL for Time and Date formats?
MySQL supports a number of time and date column formats: Some of them are
1) DATE
2) DATETIME
3) TIMESTAMP
What is data independence? Data Independence: Techniques which permit data to be changed without affecting the applications in which procedure it. There are two types of data
Data slice explanation
Question: (a) What are decision support systems, and what role do they play in the business environment? (b) Data mining is a knowledge discovery process of automated extr
What disadvantage of ODBC does OLE DB overcome? By breaking the features and the methods of a DBMS into COM objects, OLE DB characteristic overcomes a main disadvantage of ODBC
What is a primary key? Primary key is chosen by the database designer as the principal means of identifying an entity in the entity set.
Describe the storage structure of indexed sequential files and their access method. Ans: Storage structure of Indexed Sequential files and their access: To achieve fast rand
Relations create the database. They must satisfy various properties, like no duplicate tuples, no ordering of tuples, and atomic attributes, etc. Relations that satisfy these basic
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
why are older data models are being replaced by new data models
A set of possible data values is called? A set of possible data values is called as domain.
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