DBMS Tutorial Point
Database-management-system Tutorial .
1. To eliminate duplicate rows in a query, the ________ qualifier is used in the SQL select command. A. ONLY B. UNIQUE C. DISTINCT D. SINGLE Answer: C 2. In the SQL language, the ________ statement is used to make table definitions. A. DQL B. DML C. DDL D. DCL Answer: C
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
What is embedded SQL, embedded SQL is the one that combines the high-level language with the DB language like SQL. It allows the application languages to communicate with DB and get the requested result. Embedded SQL is a super-set of Transact-SQL that lets you place Transact-SQL statements in application programs written in languages such as … 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