General MySQL Oracle SQL Server

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What Is Commit in MySQL
What Is Commit in MySQL? Commit is a way to terminate a transaction with all database changes to be saved permanently to the database server.   ⇒ What Is RollBack in MySQL ⇐ What Is Transaction in MySQL ⇑ Database Basics and Terminologies in MySQL ⇑⇑ MySQL Database Tutorials 2016-10-16, 2335🔥, 0💬

What Is Transaction in MySQL
What Is Transaction in MySQL? A transaction is a logical unit of work requested by a user to be applied to the database objects. MySQL server introduces the transaction concept to allow users to group one or more SQL statements into a single transaction, so that the effects of all the SQL statements... 2016-10-16, 2258🔥, 0💬

MySQL Database Tutorials
Where to find MySQL database server tutorials? Here is a collection of tutorials, tips and FAQs for MySQL DBA and MySQL database application developers. Clear explanations and sample scripts provided can be used as learning tutorials or interview preparation guides. It doesn't matter whether you are... 2016-10-16, 47447🔥, 0💬

What Is a Directory Object in Oracle
What Is a Directory Object in Oracle? A directory object is a logical alias for a physical directory path name on the operating system. Directory objects can be created, dropped, and granted access permissions to different users. The following tutorial exercise shows you some good examples: &gt;... 2016-10-15, 2741🔥, 0💬

Run Queries on External Tables in Oracle
How To Run Queries on External Tables in Oracle? If you have an external table defined as a text file with the ORACLE_LOADER driver, you can add data to the text file, and query the text file through the external table. By default, data fields in the text file should be terminated by ','. The tutori... 2016-10-15, 2329🔥, 0💬

Load Data from External Tables in Oracle
How To Load Data from External Tables to Regular Tables in Oracle? Once you have your data entered in a text file, and an external table defined to this text file, you can easily load data from this text file to a regular table. The following tutorial exercise shows you how to load data from the tex... 2016-10-15, 2314🔥, 0💬

Error: Imported Table Already Exists in Oracle
What Happens If the Imported Table Already Exists in Oracle? If the import process tries to import a table that already exists, the Data Pump Import utility will return an error and skip this table. The following exercise shows you a good example: &gt;cd \oraclexe\app\oracle\product\1 0.2.0\serve... 2016-10-15, 6145🔥, 0💬

Where Is the Export Dump File Located in Oracle
Where Is the Export Dump File Located in Oracle? If you are not specifying the dump directory and file name, the dump file will be stored in the default dump directory with the default file name. The tutorial exercise below tells you find what is your default dump directory and locate the dump file.... 2016-10-15, 4766🔥, 0💬

Import One Table back from a Dump File in Oracle
How To Import One Table Back from a Dump File in Oracle? If you only want to import one table back to the database, you can use a dump file that was created by full export, schema export or a table export. The following tutorial exercise shows you how to import the "fyi_links" table from a dump file... 2016-10-15, 3493🔥, 0💬

Disk Space Needed for an Export Job in Oracle
How To Estimate Disk Space Needed for an Export Job in Oracle? If you just want to know how much disk space for the dump without actually exporting any data, you can use the ESTIMATE_ONLY=y parameter on the expdp command. The following tutorial exercise shows you how a system user wants to see the d... 2016-10-15, 2984🔥, 0💬

Perform a Full Database Export in Oracle
How To Do a Full Database Export in Oracle? If you are ready to do a full database export, you can use the FULL=y parameter on the expdp command, as shown in the following tutorial exercise: &gt;expdp SYSTEM/fyicenter FULL=y ESTIMATE_ONLY=y Starting "SYSTEM"."SYS_EXPORT_FULL_01": SYSTEM/**** FUL... 2016-10-15, 2937🔥, 0💬

Invoke the Data Pump Export Utility in Oracle
How To Invoke the Data Pump Export Utility in Oracle? The Data Pump Export utility is distributed as executable file called "expdp.exe". To invoke this utility, you should go to the "bin" directory of your Oracle server installation and run the "expdp" command. Here is tutorial exercise on how to in... 2016-10-15, 2701🔥, 0💬

ODBC Drivers and DSN Configuration for Oracle
Where to find answers to frequently asked questions on ODBC Drivers, DSN Configuration and ASP Connection for Oracle? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team ODBC Drivers, DSN Configuration and ASP Connection for Oracle. Clear answers are pro... 2016-10-15, 2691🔥, 0💬

Invoke the Data Pump Import Utility in Oracle
How To Invoke the Data Pump Import Utility in Oracle? The Data Pump Import utility is distributed as executable file called "impdp.exe". To invoke this utility, you should go to the "bin" directory of your Oracle server installation and run the "impdp" command. Here is tutorial exercise on how to in... 2016-10-15, 2685🔥, 0💬

Export Your Own Schema in Oracle
How To Export Your Own Schema in Oracle? If you have a non-system user account and you want to export all data objects in the schema associated with your account, you can use the "expdp" command with the SCHEMAS parameter. Running "expdp" command with a non-system user account requires a directory o... 2016-10-15, 2639🔥, 0💬

Modes of Data Dump Export and Import in Oracle
What Are Data Pump Export and Import Modes in Oracle? Data Pump export and import modes are used to determine the type and portions of database to be exported and imported. Oracle 10g supports 5 export and import modes: Full: Exports and imports a full database. Use the FULL parameter to specify thi... 2016-10-15, 2631🔥, 0💬

Original Export/Import Utilities in Oracle
What Are the Original Export and Import Utilities in Oracle? Oracle original Export and Import utilities are standalone programs that provide you a simple way for you to transfer data objects between Oracle databases, even if they reside on platforms with different hardware and software configuratio... 2016-10-15, 2614🔥, 0💬

Data Pump Export Utility in Oracle
What Is the Data Pump Export Utility in Oracle? Oracle Data Pump Export utility is a standalone programs that allows you to export data objects from Oracle database to operating system files called dump file set, which can be imported back to Oracle database only by Oracle Data Pump Import utility. ... 2016-10-15, 2576🔥, 0💬

Export Several Tables Together in Oracle
How To Export Several Tables Together in Oracle? If you don't want to export the entire schema and only want to export several tables only, you can use the "expdp" command with the "TABLES" parameter as shown in the following tutorial exercise: &gt;cd \oraclexe\app\oracle\product\1 0.2.0\server\B... 2016-10-15, 2537🔥, 0💬

Data Pump Import Utility in Oracle
What Is the Data Pump Import Utility in Oracle? Oracle Data Pump Import utility is a standalone programs that allows you to import data objects from an Oracle dump file set into Oracle database. Oracle dump file set is written in a proprietary binary format by the Data Pump Export utility. Import ca... 2016-10-15, 2484🔥, 0💬

Invoke Original Export/Import Utiities in Oracle
How To Invoke Original Export/Import Utilities in Oracle? If you really want to run the original export import utilities, you can still go to "bin" directory of the Oracle server path and run the "exp" or "imp" command. The tutorial exercise below tells you how to run the export and import utilities... 2016-10-15, 2331🔥, 0💬

What Is Open Database Communication (ODBC) in Oracle
What Is Open Database Communication (ODBC) in Oracle? ODBC, Open Database Communication, a standard API (application program interface) developed by Microsoft for Windows applications to communicate with database management systems. Oracle offers ODBC drivers to allow Windows applications to connect... 2016-10-15, 3826🔥, 0💬

Windows Applications Connect to Oracle Servers in Oracle
How Can Windows Applications Connect to Oracle Servers in Oracle? A Windows application can connect to an Oracle server directly, if it knows how to use the Oracle TNS technology. A Windows application can connect to an Oracle server indirectly through Windows ODBC manager, because it offers ODBC dr... 2016-10-15, 3160🔥, 0💬

Install Oracle ODBC Drivers in Oracle
How To Install Oracle ODBC Drivers in Oracle? Oracle offers different ODBC drivers for different versions of Oracle servers. When you install an Oracle server or a client tools on your Windows system, the appropriate ODBC driver will be installed for you automatically. If you want to install a speci... 2016-10-15, 2619🔥, 0💬

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General MySQL Oracle SQL Server