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i am required to come up with entities relationships, optionality and cardinality from a scenario. there is a night club and bookings for a musician band
explain multi key file organisation
What are the function of DBA?
The External or View Level The external or view level is the highest level of abstraction of database. It gives a window on the conceptual view, which permits the user to see
Define reference file
how to make an e r diagram?
Define deadlock avoidance. An alternative method for avoiding deadlocks is to needs additional information about how resources are to be requested. Each request requires the s
What should be declared explicitly in the corresponding ABAP/4 Statements to access internal tables without header lines & why? Work Area. This is needed as the Work Area is
What are data models? Explain it detail? Entity relationship model Rectangles Ellipse Diamonds Lines Relational model Relational model use a collection
how many types of data model in DBMS? explain data abstraction with its different level
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