Earn $100 Online Daily. Work From Home. Click Here

What is the correct answer?


Which one is correct statement?
Logical data independence provides following without changing application programs:
(i) Changes in access methods.
(ii) Adding new entities in database
(iii) Splitting an existing record into two or more records
(iv) C

A. (i) and (ii)

B. (iv) only

C. (i) and (iv)

D. (ii) and (iii)

Related Questions

Which normal form is considered adequate for normal relational database… What is a disjoint less constraint? In an ER model,_____ is described in the database by storing its data. Which of the following is true for network structure? Which of the following relational algebra operations do not require the… ____specifies a search condition for a group or an aggregate. If both the functional dependencies : XY and YX hold for two attributes… Which of the following is not a logical database structure? In SQL the statement select * from R, S is equivalent to The default level of consistency in SQL is According to the levels of abstraction, the schema at the intermediate… Key to represent relationship between tables is called The _____ category includes storage media that can be operated on directly… A relational database developer refers to a record as The ______ indexes are forced to store only record IDs in the data structure… The clause alter table in SQL can be used to In 2NF _____is a full form of SQL. The fact that information in the data warehouse changes far less often… A top-to-bottom relationship among the items in a database is established… Which of the following aggregate functions does not ignore nulls in its… In SQL, testing whether a subquery is empty is done using A data type or format is specified for each _________ Which one is true statement : Relational Algebra does not have Drop Table cannot be used to drop a table referenced by a ______ constraint. Which of the following constitutes a basic set of operations for manipulating… Wait-for graph is used for The part of a database management system which ensures that the data remains… The full form of GUI is _________