ENG514 Short Notes for Mid Term

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ENG514 Short Notes for Mid Term. Aslam u Alaikum dear students. If you are looking for ENG514 Short Notes for Mid Term file? Then you are visiting the right website. I provided the perfect solution here according to my efforts. If there is any mistake then please correct it before submitting the VULMS account and before midterm and final term exams preparation .Thanks

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ENG514 Short Notes for Mid Term
ENG514 Short Notes for Mid Term

 

Inter Schema Mapping:
A mechanism by which records or data are at one level related to a changed format of the same data at a different level known as mapping. When we connect one form of data to an external level with the same data in a different form is known as external/conceptual data mapping.

We have seen examples of external/conceptual mapping in the previous lecture) V in the same way when conceptual level data correlates with the same data at an internal level, this is called conceptual/internal
mapping. Now the question arises how this mapping is done. Means how is it possible to have data on one level in date format and on a higher level the same data shows us the age.

This hidden mechanism, conversion system or formula that converts date of birth to the employee’s age is carried out by the VU mapping function and database management system (CS403). © Copyright Virtual University of Pakistan 42 is defined in a specific ext/con mapping, such as when data at the conceptual level is presented as the employee’s age is done by the external schema of that particular user.

ENG514 Short Notes for Mid Term