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It provides a better and faster method to search a particular item you are looking for. When you issue a select statement to have a particular item with some condition, it searches the whole DB to get the answer for you. Instead if you have some indexes to it, the searching is done faster.
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What is the means drop command in sql?
The DROP command allows you to delete things such as tables or indexes.
Why does SQL allow duplicate tuples?
There are many reasons why SQL allows duplicate tuples (rows):To store non-unique values.To simply remove primary keys, unique indexes, and unique constraints.It allows this if there is no unique constraint.
List two reasons why null values might be introducedin database?
1. special requirements for its use in SQL joins. 2. special handling required by aggregate functions and SQL grouping operators
Which SQL keyword is used to specify a condition that rows must meet to be included in the results of an SQL SELECT query?
select
What will an index tell you?
Indexes provide useful information including: Even with their limitations, indexes show trends and changes in investing patterns. They can give snapshots of market activity, even if they don't tell the whole story. Indexes provide a yardstick for comparison over time.
What is the means drop command in sql?
The DROP command allows you to delete things such as tables or indexes.
Why does SQL allow duplicate tuples?
There are many reasons why SQL allows duplicate tuples (rows):To store non-unique values.To simply remove primary keys, unique indexes, and unique constraints.It allows this if there is no unique constraint.
What tasks are included in database maintenance?
Back Up Database Task Performs different types of SQL Server database backups. Check Database Integrity Task Checks the allocation and structural integrity of database objects and indexes. Execute SQL Server Agent Job Task Runs SQL Server Agent jobs. Execute T- SQL Statement Task Runs Transact-SQL statements and more
How do you use SQL?
You use SQL by issuing commands to an SQL server, either directly by you or by a program you are using.
Difference between sql and sql plus?
SQL*PLUS is a interface between user and Oracle database. It Provide an environment to use the SQL which is a query language to communicate with oracle database
Why is it important to learn SQL?
Learning SQL is important because it is the standard language for accessing and manipulating data in relational databases. It is widely used in a variety of industries and professions, making it a valuable skill for data analysis, database management, and software development. Understanding SQL allows you to retrieve specific information, perform complex queries, and efficiently manage large datasets.
What are SQL data types used for?
There are many purposes behind 'SQL' data types. The most common use of 'SQL' is with website programming and hosting services, as well as HTML coding.
Whether you need to update to use SQL 2000 or SQL 2005?
yes definitely you need to update
Do you need sql and c plus plus to code in them in Visual Studio?
Connect to a SQL Server, query with Transact-SQL (T-SQL), and view the results with the mssql plugin for Visual Studio Code. The SQL Database projects extension for VS Code comes with the mssql extension, which supports SQL projects on Windows, macOS, and Linux. To learn more about data science please visit- Learnbay.co
Who are users of SQL programming?
The users of SQL Programming include database administrators(DBAs) and application developers. They use SQL programming to do daily tasks efficiently and correctly.
What type of database does WikiAnswers use?
My SQL
Can you use SQL to pull data from Oracle?
yes.... example: select *from employee; dml command in sql language
