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What is conceptual model ?
A conceptual model is a independent of both hardware and software.
explain concept of decomposition?
Question : Mr. Smith Harry has a car manufacturing company which has recently integrated management information system. He wishes to obtain more information on ethics and socia
what is Lossless-join decomposition
Conversion of entity sets: I) For every strong entity type E in the ER diagram, we make a relation R containing all the easy attributes of E. The relation R pri
I need a help with my assignment of data envelopment analysis which is due for submission next week on monday the 10th Dec. Will you be able to help so that I can submit it on tim
Spanned and unspanned organisation? Spanned and unspanned organization: If records are not permited to cross block boundaries then the organisation is called unspanned record
The Incident table, with an auto-incrementing incident number, etc, looks like: incident_num reporter date time incide
Fifth Normal Form (5NF) These relations still have a difficulty. While defining the 4NF we mentioned that all the attributes depend upon each other. Whereas creating the two ta
In Database software have only pure security or some dis secured by administrator?
What is an entity relationship model? The entity relationship model is a collection of basic objects known as entities and relationship between those objects. An
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