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what is data link layer
What is schema
Your friend owns and operates a wholesale shoe business with annual revenues of $5 million dollars. His wholesale business specializes in supplying and supporting retailers with sh
pine vally company
Can a domain, assigned to a data element be changed? Yes. We can do so by just overwriting the entry in the field domain.
In the ER diagram, one example of subclassing is depicted following the Services entity. The subclasses Item Based and Time Based are created. The entity Services gains the attribu
Compare the Nested-loop join and block-nested loop join Ans: Nested loop join - It is costly as worst case cost, no. of block accesses needed is n r * b s + b r where b
What does the extract statement do in extract datasets? The data is written to virtual memory by extract commands.
East Coast Aquarium Relational Database
what is the importance of back up files
Question : (a) Database Management Systems (DBMS) is the foundation of business intelligence. Explain the following concepts related to DBMS: (i) Entity Relationship Diagr
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