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Question 1 Explain the concept of Foreign Key. How a foreign key differs from a Primary Key? Can the Foreign Key accept nulls?
Question 2 With a necessary example explain (i) Basic Constructs of E-R Modeling (ii) E-R Notations
Question 3 Explain the first 3 Normal Forms taking the help of an un-normalized relation and reducing it to 3 NF
Question 4 Explain the concept of Data Mining? How it is related with data warehouse
Question 5 Write the SQL queries using Data Manipulation Language (DML) statements
Question 6 Create the payroll database considering table employee
What are axioms? Axioms or rules of inference give a simpler technique for reasoning about
Define blocks? The database system resides eternally on non-volatile storage, and is into fixed-length storage units known as blocks.
Construct a clean ans concise ER diagram for the database indicating the cardinality mapping for Employee management syatem
How to create values of structured type? Constructor functions are used to make values of structured types. A function with the similar name as a structured type is a construct
a) Suppose we updated the catalog tables in real time, that is, after every update, insert, or delete SQL statement were executed-rather than only running RUNSTATS once every few
What is a super key? A super key is a set of one or more attributes that collectively permits us to recognize uniquely an entity in the entity set.
My cut off date is very soon in a Database subject and i dont know how to solve anything in it
What is transaction? Transaction is a unit of program implementation that accesses and possibly updated several data items.
what characterizes the levels in RAID technology
as a customer service employee explain five measures you would recommend to make even a displeased students patronize the school canteen
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