Interface between an application program and the dbms The interface between an application program and the DBMS is usually provided by the Back end Data access API Front end Programmer Answer-Data access API
Consider a relation R(A, B, C, D) with the following functional dependencies: A -> (B, C, D), (A, D) -> (B, C) and (C, D) -> (A, B). Identify the candidate key(s). a) {A}b) {A}, {C, D}c) {A}, {C, D}, {A, D}d) {C, D} The database design prevents some data from being stored due to … Read more
In this article you will get DBMS GATE Questions 2018 with answers. 1. In an Entity-Relationship (ER) model, suppose R is a many-to-one relationship from entity set E1 to entity set E2. Assume that E1 and E2 participate totally in R and that the cardinality of E1 is greater than the cardinality of E2. Which one … Read more
It Includes the latest DBMS MCQ Questions and Answer.SQL Online test questions and answers. 1.Evaluate the SQL statement: SELECT ROUND (TRUNC (MOD (1600, 10),-1), 2) FROM dual; What will be displayed? a) 0 b) 1 c) C.0.00 d) D.an error statement Ans A 2.Evaluate the SQL statement: TRUNCATE TABLE DEPT; Which three are true about … Read more
1. Aggregate functions are functions that take a ___________ as input and return a single value. a) Collection of values b) Single value c) Aggregate value d) Both Collection of values & Single value Answer: a 2. SELECT __________FROM instructor WHERE dept name= ’Comp. Sci.’; Which of the following should be used to find the … Read more
