File Name: basic pl sql interview questions and answers .zip
It is a block-structured language having logical blocks which are made up of three sub-blocks i. It includes procedural language elements like conditions and loops and allows declaration of constants and variables, procedures and functions. It also helps the users to develop complex database applications using control structures, procedures, modules, etc. Each constant, value and parameter has a data type that tells us the type of data used and their associated operations in the program. It is an attribute which is used for anchoring. The fields of the row have same name and data types as column in the view. This declares a record that can store an entire row for DEPT table.
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Have you prepared to attend the job interview? Are you confused in job research? Then no problem we have the right answer to you in in our site page. The language includes object oriented programming techniques such as encapsulation, function overloading, information hiding all but inheritance , and so, brings state-of-the-art programming to the Oracle database server and a variety of Oracle tools. Question 2.
PL SQL is a procedural language which has interactive SQL, as well as procedural programming language constructs like conditional branching and iteration. Cursor is a named private area in SQL from which information can be accessed. They are required to process each row individually for queries which return multiple rows. It then opens a cursor, gets rows of values from the active set in fields of the record and shuts when all records are processed. It is used for : 1 Audit data modifications. Function is called as a part of an expression. Table columns are referred as THEN.
PL/SQL Interview Questions and Answers. Let's start!! Q #1) Differentiate PL/SQL and SQL? Q #2) Enlist the characteristics of PL/SQL? Answer.
Answer: Cursor is a sql private work area. It opens an area of memory where the query is parsed and executed. Answer: When referencing the current row from an explicit cursor,use the where current of clause. This allows you to apply updates and delete to the row currently being addressed,without the need to explicitly reference the rowid.
Here is a list of these interview questions and answers:. Explain the uses of a database trigger. What is a stored procedure? A single query or command execution A full programming language What does it comprise?
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Cursor is private sql area which is used to execute sql statements and store processing information.Reply
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PL Procedural language is an extension to SQL Structured Query Language where a developer can write complex database interactions using procedures, control structures like branching and iteration, modules and functions.Reply