Database views aresaved in the database as named queriesand can be used to save frequently used complex queries. Views arean excellent tool to restrict access to the datain such a way that a user can see and (sometimes) modify exactly what they need and no more. In the following VIEW,...
1. Make a note of all node names (and/or IP addresses), SQL Server virtual names along with preferred nodes. If there are more than three nodes you may need to also take note of possible owners for each SQL resource group. For my example assume that I have a cluster with node1 and...
3. What is SQL? SQL stands for Structured Query Language , and it is used to communicate with the Database. This is a standard language used to perform tasks such as retrieval, updation, insertion and deletion of data from a database. 7. What is a unique key? A Unique key constraint ...
Want to get set up with sample data?Here's how to get four cakes, a million customers, and a million orders: In your terminal, download our script and start up MySQL: $ curl -O https://static.interviewcake.com/bakery_schema_and_data.sql && mysql.server start && mysql -u root Then...
INTERSECT operator is used to return rows returned by both the queries.What is an ALIAS command?ALIAS name can be given to a table or column. This alias name can be referred in WHERE clause to identify the table or column.Example-. 1 Select st.StudentID, Ex.Result from student st, ...
SQL Job Interview Questions and Answers 1 :: What is SQL (Structured Query Language)? SQL is an English like language consisting of commands to store, retrieve, maintain & regulate access to your database.Read More 2 :: What is the SQL*Plus? SQL*Plus is an application that recognizes &...
modern solutions. We share PL/SQL tutorials, advanced SQL queries,UNIXguides, Business Intelligence concepts, and interview Q/A with real life industry examples. We make significant effort to make learning a fun experience. The website will give you information about advanced SQL Queries in detail...
12.What is Bit-map index?Explain with Example.(80 % Asked in PL SQL Interview Questions) Answer: 1.If Table contains the distinct values which are not more than 20 distinct values then user should go for Bit map indexes. 2.User should avoid the indexing on each and every row and do ...
More acceptances towards the queries Accessing information fast Easy implementation of security measures Ensures flexibility in modifications Eradicating unreal data and decreasing the redundancy Compact database storage Maintaining data consistency This is one of the most crucialSQL Interview questionswhich can...
7. Write a query to delete duplicate records from a table. Note: Write queries that suits the below situation. A table is having a unique key and having duplicates records, table is not having a unique and having duplicate records.