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Differance between internal and external schema? Internal and external schema: Internal Schema • Describes the physical storage structure • Uses a physical data model External
What is the use of unique function? UNIQUE function: If UNIQUE is specified then only unique values are used to computed the mean.
#questiRegional Gardens has many nurseries, including Wagga Wagga, Bathurst, Albury, Orange, and Dubbo. Each nursery is known by its campus code, eg WW, B, A, O and D respectively.
draw er diagram using entities crop,employee,department,plot,cultivation plan,machinery,seed,fertilizer
sir, could anybody help me in getting complete information about the mentioned topic
Define the Boyce-Codd Normal Form with instance and also Compare BCNF and 3NF. Ans: BCNF: For each functional dependency X->Y in a set F of functional dependencies over relati
Consider student (std_id, std_name, date_of_birth, phone, dept_name). Put the data for a student with student id200, name arun, birth date 1 February, 1985, phone number (01110 328
A software contract and consultancy firm maintains details of all the various projects in which its employees are currently involved. These details comprise: Employee Numbe
#explain five disadvantages of a dbms..
What are the several forms of identity? a) Value b) Name c) Built-in
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