A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
Splitting a database table into multiple segments for performance or manageability.
A type of integrity constraint used in a RDBMS platform to ensure that a value in a column matches one of a range of key values from another table.
A widely-used open-source operating system that is particularly popular on servers.
UPDATE changes the values of the specified columns in all rows that satisfy the condition. Only the columns to be modified need be mentioned in the SET clause; columns not explicitly modified retain t…
Oracle Database 12c. Please also tag oracle for search purposes.
the process of moving databases or data from one place to another
Oracle Database 11g (not 11g R2). Please also tag oracle for search purposes.
a relational model database server developed by IBM. It primarily runs on Unix (namely AIX), Linux, IBM i (formerly OS/400), z/OS and Windows servers.
Writing queries to request or change information stored in a database or other information management system. Questions should include table and index definitions, sample data, expected output, and a …
a list/history of modification executed by a database management system to guarantee ACID properties over crashes or hardware failures.
A mechanism for managing concurrent access to shared data or resources by granting temporarily exclusive access to the processes requesting the lock.
directly relevant to the question and likely to be the source of your problem, not just because you're using a PHP library to connect to a database. PHP stands for Professional Hype…
A core statement in SQL that does what it says on the tin: inserts data into a table.
a web service that makes it easy to set up, operate, and scale a relational database in the cloud.
a relational database management system that is part of the Microsoft Office suite.
The choice of settings for hardware, firmware, software or other components of a database system.
MySQL version 5.7 - please also tag with mysql for search purposes.
A cluster consists of a group of computers connected so that in many respects they can be viewed as a single system.
When used in the context of databases, memory refers to RAM directly addressable by the CPU as opposed to going through the I/O subsystem.
the process of organizing columns into tables within a relational database in such a way as to minimize redundancy and avoid insertion, update and deletion anomalies.
a relational database-as-a-service from Microsoft. This tag is for questions about Azure SQL Database, NOT SQL Server hosted in an Azure VM (use azure-vm).
Operating system produced by Microsoft. Windows is produced in various desktop and server versions. Please also add a version-specific tag like windows-10 if that is relevant to the question.
A mechanism for committing a consistent set of changes into a database atomically.
Installation (or setup) of a database application, is the act of putting the application onto a computer system so that it can be executed.
A virtual table that represents the data in one or more tables in an alternative way.
PostgreSQL performance optimization. Essential to include sufficient information in your question as outlined in the full tag wiki.
SQL Server Reporting Services, a web based reporting tool produced by Microsoft and bundled with SQL Server.
A function performs some specified work, usually taking parameters as input. In terms of databases these may be specific to SQL or to the database vendor.
describe when a `SELECT` statement is used as part of a larger SQL statement. The larger statement may be DML and is always found within brackets or parenthesis.
Linked server allows operation to multiple server as one query.