General MySQL Oracle SQL Server

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"ALTER LOGIN" - Disabling a Login Name in SQL Server
How To Disable a Login Name in SQL Server? If you want temporarily disable a login name, you can use the "ALTER LOGIN" statement with a DISABLE keyword. If you want to enable it later on, you can use the ENABLE keyword. The tutorial exercise below shows how to disable and enable login name "Dba_Logi... 2016-10-19, 4395🔥, 0💬

Basic Features of a Trigger in SQL Server
What Are the Basic Features of a Trigger in SQL Server? Since a SQL Server trigger is a really an event handler, it has the following basic features similar to event handlers in other programming languages: Event Type - It must be declared to handle a specific event, like a DELETE event. Object Scop... 2016-10-25, 4331🔥, 0💬

Create a Table in a Given Tablespace in Oracle
How To Create a Table in a Specific Tablespace in Oracle? After you have created a new tablespace, you can give it to your users for them to create tables in the new tablespace. To create a table in a specific tablespace, you need to use the TABLESPACE clause in the CREATE TABLE statement. Here is a... 2019-01-08, 4325🔥, 1💬

💬 2019-01-08 Bvm: Help :)

What Is SQL*Plus in Oracle
What Is SQL*Plus in Oracle? SQL*Plus is an interactive and batch query tool that is installed with every Oracle Database Server or Client installation. It has a command-line user interface, a Windows Graphical User Interface (GUI) and the iSQL*Plus web-based user interface.   ⇒ What Is Transport Net... 2020-05-29, 4322🔥, 2💬

💬 2020-05-29 FYIcenter.com: @Frank, Yes. SQL*Plus offers you query tools to connect to remote Oracle servers.

💬 2020-05-27 Frank Jam: What the usage for SQL*Plus? Query tools

What Is a Dynamic Performance View in Oracle
What Is a Dynamic Performance View in Oracle? Oracle contains a set of underlying views that are maintained by the database server and accessible to the database administrator user SYS. These views are called dynamic performance views because they are continuously updated while a database is open an... 2020-10-26, 4312🔥, 1💬

💬 2019-10-16 Aninda: Best tutorial

What Is ISAM in MySQL
What Is ISAM in MySQL? ISAM (Indexed Sequential Access Method) was developed by IBM to store and retrieve data on secondary storage systems like tapes.   ⇒ What Is MyISAM in MySQL ⇐ What Is Union in MySQL ⇑ Database Basics and Terminologies in MySQL ⇑⇑ MySQL Database Tutorials 2017-07-03, 4249🔥, 0💬

Turning on mysql Extension on the PHP Engine in MySQL
How To Turn on mysql Extension on the PHP Engine in MySQL? The "mysql" API extension is provided as "php_mysql.dll" for Windows system. Your PHP binary download package should have "php_mysql.dll" included. No need for another download. But you need to check the PHP configuration file, \php\php.ini,... 2017-07-30, 4215🔥, 0💬

Shutdown the Server with "mysqladmin" Command in MySQL
How To Shut Down the Server with "mysqladmin" in MySQL? If you want to shut down the server with "mysqladmin", you can use the command "mysqladmin shutdown" as shown in the following tutorial example: &gt;cd \mysql\bin &gt;mysqladmin -u root shutdown If this command returns no messages, your... 2018-06-01, 4199🔥, 0💬

PRINT Statements in SQL Server Transact-SQL
How to print value on console in SQL Server Transact-SQL? How to use the PRINT statements? In Transact-SQL, you can use PRINT statements to print values on the console of the client tool, in the syntax of: PRINT &lt;value&gt; When a PRINT statement is executed, the system will: Print the val... 2017-04-01, 4199🔥, 0💬

Difference between BINARY and VARBINARY in MySQL
What Are the Differences between BINARY and VARBINARY in MySQL? Both BINARY and VARBINARY are both binary byte data types. But they have the following major differences: BINARY stores values in fixed lengths. Values are padded with 0x00. VARBINARY stores values in variable lengths. Values are not pa... 2018-01-19, 4197🔥, 0💬

Run Stored Procedures in Debug Mode in Oracle
How To Run Stored Procedures in Debug Mode in Oracle? If have an existing stored procedure and you want to debug it interactively, you can use the debug feature provided in SQL Developer. The following exercise shows you how to start the debug mode: Open you connection name, like Local_XE. Open Proc... 2019-01-12, 4190🔥, 0💬

Transaction Committed when START TRANSACTION Executed in MySQL
What Happens to the Current Transaction If a START TRANSACTION Is Executed in MySQL? If you are in a middle of a current transaction, and a START TRANSACTION command is executed, the current transaction will be committed and ended. All the database changes made in the current transaction will become... 2016-10-17, 4190🔥, 0💬

Using INSERT, UPDATE and DELETE Statements in SQL Server
Where to find answers to frequently asked questions on Using INSERT, UPDATE and DELETE Statements in SQL Server? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on Using INSERT, UPDATE and DELETE Statements in SQL Server. Clear answers are provided w... 2016-11-03, 4185🔥, 0💬

Scope Levels of User Privileges in MySQL
How Many Scope Levels Can User Privileges Apply in MySQL? MySQL supports 5 scope levels a user privilege can be granted: Global Level - A privilege granted at this level applies to all databases on the server. Privileges granted at the global level stored in "mysql.user" table. Database Level - A pr... 2017-12-09, 4179🔥, 0💬

Keep Data Files When Tablespace Dropped in Oracle
What Happens to Data Files If a Tablespace Is Dropped in Oracle? If a tablespace is dropped, what happens to its data files? By default, data files will remain in OS file system, even if the tablespace they are mapped is dropped. Of course, you delete the data files using OS commands, if they are no... 2019-01-01, 4158🔥, 0💬

Arithmetic Operations with Different Data Types in SQL Server
What Happens to an Arithmetic Operation with Two Different Data Types in SQL Server Transact-SQL? When two expressions with different data types are put together for an arithmetic operation, the expression with a lower rank data type will be converted automatically to higher rank data type. Usually,... 2017-03-27, 4139🔥, 0💬

Input Buffer in SQL*Plus in Oracle
What Is Input Buffer in SQL*Plus in Oracle? Input buffer is a nice feature of the command-line SQL*Plus tool. It allows you to revise a multiple-line command and re-run it with a couple of simple commands. By default, input buffer is always turned on in SQL*Plus. The last SQL statement is always sto... 2020-07-15, 4110🔥, 0💬

Using Binary Strings in Arithmetical Operations in SQL Server
Can Binary Strings Be Used in Arithmetical Operations in SQL Server Transact-SQL? Can binary strings be used in arithmetical operations? The answer is yes. But there are two simple rules you need to remember: If an arithmetical operation has one binary string operand and one integer data type operan... 2017-02-28, 4106🔥, 0💬

Built-in Internal User Accounts in Oracle
What Are Internal User Account in Oracle? An internal user account is a system predefined user account. Oracle 10g XE comes with a number of internal accounts: SYSTEM - This is the user account that you log in with to perform all administrative functions other than starting up and shutting down the ... 2019-07-21, 4089🔥, 0💬

Rolling Back the DDL Statement in a Trigger in SQL Server
Can You Roll Back the DDL Statement in a Trigger in SQL Server? Can you roll back the DDL statement in a trigger? The answer is yes. Since the DDL statement that fires the trigger and the statements defined inside the trigger are all executed as a single statement batch, you can add a ROLLBACK state... 2016-10-22, 4081🔥, 0💬

sys.objects - Listing All User Defined Functions in SQL Server
How To List All User Defined Functions in the Current Database in SQL Server Transact-SQL? If you want to see a list of all user defined functions in your current database, you can use the system view, sys.objects as shown in this tutorial exercise: USE FyiCenterData; GO -- Number of Sundays in a gi... 2016-12-24, 4080🔥, 0💬

Ways to Get the Current Time in MySQL
How Many Ways to Get the Current Time in MySQL? There are 8 ways to get the current time: SELECT NOW() FROM DUAL; 2006-07-01 10:02:41 SELECT CURRENT_TIME() FROM DUAL; 10:02:58 SELECT SYSDATE() FROM DUAL; 2006-07-01 10:03:21 mysql&gt; SELECT CURRENT_TIMESTAMP() FROM DUAL; 2006-07-01 10:04:03 SELE... 2018-03-13, 4079🔥, 0💬

Overflow Errors with INT Values in SQL Server Transact-SQL
What Happens If an Integer Is Too Big for INT (INTEGER) Date Type in SQL Server Transact-SQL? If you are entering an INT data type literal with representing an integer value too big for INT data type to store, the SQL Server will give you an arithmetic overflow error. The same error will happen on B... 2017-04-19, 4075🔥, 0💬

What Is an Oracle Database in Oracle
What Is an Oracle Database in Oracle? An Oracle database is a collection of data treated as a big unit in the database server.   ⇒ What Is an Oracle Instance in Oracle ⇐ What Is Oracle in Oracle ⇑ Oracle Database Basic Concepts ⇑⇑ Oracle Database Tutorials 2020-11-11, 4066🔥, 0💬

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General MySQL Oracle SQL Server