It's worth noting that the validation step is instant. The unique index means the database alreadyknowsthere can be no duplicate values in its columns. All it needs to do is set the constraint's state; there's no need to check the data. How to swap primary key constraints The process ...
How to connect to Pluggable Databases in Oracle RAC 12cR1? Solution: There are four ways in which a connection with the pluggable databases (PDBs) can be established. Using the default service with the same name as the pdb name, which gets created by the databa...
In SQL Server Management Studio, connect to the Database Engine server type, expand Databases, right-click a database, point toTasks, and then clickImport DataorExport data. —or— In a command prompt window, run DTSWizard.exe, located in C:\Program Files\Microsoft SQL Server\100\DTS\Bin...
MySQL is fast, reliable, scalable, and easy to use. It was originally developed to handle large databases quickly and has been used in highly demanding production environments for many years. MySQL offers a rich and useful set of functions, and it’s under constant development by Oracle, so ...
Connecting the databases can reduce data redundancy and minimize the need to maintain separate data copies. Steps for Connecting SQL Server and Oracle 1. Creating the mwrep User Perform the following actions to create a new database user: It should be noted that you can skip these steps if...
How to do case-insensitive searches Oracle Database 12.2 added thecollateoperator. This allows you to specify the search and sort semantics for text in a query. This comes after the expression you want to apply these to. The format for this is: ...
Since MariaDB database has kept all the data’s in the filesystem so, we can easily check size of the databases and tables by navigating to the following foldervar/lib/mysql/. It won’t give you an accurate size but no major difference in the size when you comparing with the MySQL/Ma...
Successful data integration requires groundwork in a number of areas, including technical support, business goals, and corporate culture. The following are the three most critical boxes to check before starting a data integration initiative.
Note:This topic has been updated for use with Oracle 10g databases. Introduction Oracle has a highly reliable recovery mechanism built into the database, and transaction loss due to database crash can be prevented if the correct steps are followed. This text provides information to troubleshoot ...
Use Case 1: Backing Up Specific Databases mysqldump -u [username] -p [database] > dump.sql This command dumps specified databases to the file. Use Case 2: Backing Up Specific Tables The above commands dump all the tables in the specified database, if you need to take backup of some sp...