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Tags

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.

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Splitting a database table into multiple segments for performance or manageability.
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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.
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A widely-used open-source operating system that is particularly popular on servers.
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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…
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Oracle Database 12c. Please also tag oracle for search purposes.
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the process of moving databases or data from one place to another
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Oracle Database 11g (not 11g R2). Please also tag oracle for search purposes.
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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.
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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 …
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a list/history of modification executed by a database management system to guarantee ACID properties over crashes or hardware failures.
× 611
useful and which are not.
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A mechanism for managing concurrent access to shared data or resources by granting temporarily exclusive access to the processes requesting the lock.
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MySQL's Standard Dump/Backup Utility
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PostgreSQL version 9.3
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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…
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A core statement in SQL that does what it says on the tin: inserts data into a table.
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a web service that makes it easy to set up, operate, and scale a relational database in the cloud.
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a relational database management system that is part of the Microsoft Office suite.
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The choice of settings for hardware, firmware, software or other components of a database system.
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MySQL version 5.7 - please also tag with mysql for search purposes.
× 545
A cluster consists of a group of computers connected so that in many respects they can be viewed as a single system.
× 543
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.
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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.
× 521
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).
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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.
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A mechanism for committing a consistent set of changes into a database atomically.
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Installation (or setup) of a database application, is the act of putting the application onto a computer system so that it can be executed.
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A virtual table that represents the data in one or more tables in an alternative way.
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PostgreSQL performance optimization. Essential to include sufficient information in your question as outlined in the full tag wiki.
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GROUP BY : SQL Aggregation for Common Values
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SQL Server Reporting Services, a web based reporting tool produced by Microsoft and bundled with SQL Server.
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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.
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PostgreSQL version 9.4
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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.
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Linked server allows operation to multiple server as one query.
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In relational database design, a primary key can uniquely identify each row in a table. A primary key comprises a single column or a set of columns.