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What is transaction?
Transaction is a unit of program implementation that accesses and possibly updated several data items.
employee(empid,empname,dept,telno,mobno, add,sssno,tinno,WEdates,WEcomp,WEadd,WEpos,WEres) this is a employee record which is need to be normalize.the WE means work experience
Critically explained the benefits and limitations of different database technologies with proper examples
What is relational model feature? A relational model feature is much more data independence than some other database models.
What is persistency? Persistency ensures which data is stored and that after the object is no longer available (program stops running) the data will be available to other users
1. Explain different addressing modes of 8086 Explanation of all addressing modes 2. Write a sequence of instructions to exchange two register contents using stack
Candidate Key: In a relation R, a candidate key for R is a subset of the set of attributes of R, which have the differnt two properties: (1) Uniqueness: N
WHAT IS DATABASE TECHNOLOGIES
Explain the conventions for displaying an ER schema as an ER diagram? An E-R Diagram scheme might describe certain constraints to that the contents of a database must conform.
Which is the properties of entities? Attributes is the properties of entities.
example of bank
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