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Un-Normalized Form (UNF)
If a table having non-atomic values at every row, it is said to be in UNF. An atomic value is something that cannot be further decomposed. A non-atomic value, as the name suggests, can be further decomposed and simplified.
What is difference between primary index and secondary index? Primary Index a) It is an ordered file whose records are of fixed length along with two fields. b) Only base
Consider a typical sales invoice that would include the following information. Design a single table to hold all of the information required to store an invoice including this info
Example - ALTER TABLE emp MODIFY (empno NUMBER (7));
When a function module is activated syntax checking is performed automatically. YEs, a function module is activated syntax checking.
What is key ? Key - A single attribute or a combination of two or more attributes of an entity set which is used to recognize one or more instances (rows) of the set (table) is
A field-groups statement or an insert statement reverses storage space and transfers values. False.
Explain Alternate key? Alternate Key - All the candidate keys except primary key are known as alternate keys.
Single-Valued Dependencies A database is a collection of related information and it is therefore inevitable that some items of information in the database would depend on some
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)
(a) Data warehouse can be defined as "a subject-oriented, integrated, time-variant, non-volatile collection of data" in support of management's decision making process. Explain ea
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