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Question: a) There are three concurrency problems, i.e. three types of potential mistake which could occur if concurrency control is not properly enforced in the database syst
normal forms
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
please give me introduction to full data in D B M S in a short assignment
What is a heterogeneous distributed database? In a heterogeneous distributed database, dissimilar sites may use different schemas, and dissimilar dbms s/w. The sites may not be
(1) Insert into PERSON Violated constraint: - Key constraint Reason: - Primary key 1 already exists in PERSON. Dealing: - DBMS could ask the user to provide valid PER
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
My cut off date is very soon in a Database subject and i dont know how to solve anything in it
Define- relational algebra. The relational algebra is a procedural query language. It having of a set of operations that take one or two relation as input and make a new relati
We define a view in SQL through using the create view command. To describe a view, we must provide the view a name and must state the query in which computers the view. The form of
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