SQL Queries Interview Questions and Answers - Query ExamplesDisplay the dept information from department table. Display the details of all employees. Display the name and job for all employees. Display name and salary for all employees. Display employee number and total salary for each employee.
30 Most Important PL/SQL Interview Questions and Answers
Answer: Data types define the ways to identify the type of data and their associated operations. There are 4 types of predefined data types explained as follows. This attribute provides the datatype of a variable, constant or column. The row is defined as a record and its fields have the same names and data types as the columns in the table or view. Packages have 2 mandatory parts.
What is Oracle and what are its different editions? Answer: Oracle is one of the popular database provided by Oracle Corporation, which works on relational management concepts and hence it is referred to as Oracle RDBMS as well. It is widely used for online transaction processing, data warehousing, and enterprise grid computing. What is a Data Dictionary and how can it be created? Answer : Whenever a new database is created, a database-specific data dictionary gets created by the system. This dictionary maintains all the metadata related to the database and owned by the SYS user.
These are the most common and useful SQL interview questions useful for freshers as well as experienced candidates. From basics up to questions asked on advanced concepts of SQL have been also covered in this article. You can go through these questions for a quick revision of major SQL concepts before appearing for an interview. Answer: The table is a collection of record and its information at a single view. Q 3 What are different types of statements supported by SQL? It includes three statements such as Create, Alter, and Drop.
Oracle interview questions and answers - Oracle FAQ donkeytime.org - Free download as PDF File HowcanonepreventSQL* Plusconnectionwarningmessages?.
how to think alan jacobs pdf