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Describe logical data independence ? Logical Data Independence - It is the capacity to modify the conceptual schema without having to change external schemas or application p
A database will be made to store information about patients in a hospital. On arrival, each patient’s personal details (name, address, and telephone number) are recorded where poss
what is Nested relational model? Explain with examples.
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
What is OMR? OMR (Optical Mark Recognition) is the translation of marks - or the absence of marks - but not the shape of the mark on forms that have small circles ("also called
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
Illustrate how you can use QBE to perform logical AND and OR operation
i would like to ask if you will do assignment of database number of words 1500 and how much
What is the need of a log in a DBMS? Briefly describe the various types of records that are normally present in a log. Ans: The system log, which is generally writt
What are the two types of serializability? The two types of serializability is a) Conflict serializability b) View serializability
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