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Define NULL value
NULL value NULL means something is unknown. It does NOT mean null (the digit 0). Null is as well employed as attribute value for a particular entity in which attribute is not applicable for example name of child for unmarried.
as a customer service employee, explain five measures you would recommend a displeased student to patronise a school canteen
What are the various forms of data transparency? a) fragmentation transparency b) replication transparency c) location transparency
List the SQL domain Types? SQL supports the following domain types. 1) Char(n) 2) varchar(n) 3) int 4) numeric(p,d) 5) float(n) 6) date.
Which is the properties of entities? Attributes is the properties of entities.
Question: (a) e-Government implementations normally evolve through a multi-stage process. Describe, using appropriate examples, the stages involved in an e-Government implemen
give some example real life situation where DBMS are most suitable
Question (a) Visual Basic is governed by an event processor. Explain the meaning of this phrase. (b) Differentiate between an general procedure and event procedure. (c)
Explain the Relational Completeness Codd described the term relational completeness to consider to a language that is complete with respect to first-order predicate calculus ex
What is an ER diagram? Why is it used in Database management system (DBMS)?
Which method of access uses key transformation? A Hash method of access uses key transformation.
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