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The primary front-end for PostgreSQL is the psql command-line program, which can be used to enter SQL queries directly, or execute them from a file. In addition, psql provides a number of meta-commands and various shell-like features to facilitate writing scripts and automating a wide variety of tasks; for example tab completion of object names ...
Zen supports stand-alone, client-server, peer-to-peer [7] and software-as-a-service (SaaS) [8] architecture. The central architecture of Zen consists of two database engines: (1) the storage engine, known as MicroKernel Database Engine (MKDE) and described as a transactional database engine, and (2) the relational database engine, known as SQL Relational Database Engine (SRDE).
SQL allows triggers to fire on updates to specific columns; As of version 9.0 of PostgreSQL this feature is also implemented in PostgreSQL. The standard allows the execution of a number of SQL statements other than SELECT , INSERT , UPDATE , such as CREATE TABLE as the triggered action.
Foglight’s new Performance Investigator for PostgreSQL add-on directly addresses these challenges, offering advanced workload analysis, pinpointing inefficient queries, and resolving resource bottlenecks and locking issues. The solution enhances broader application performance monitoring (APM) efforts for data intensive projects with insight ...
It is a database administration tool developed for iOS with features included object viewer & designer, query builder & editor, Navicat Cloud, [16] server monitor, etc. MySQL was supported in the first release. Then, Navicat for PostgreSQL iOS version was released in January 2015. In September 2017, Navicat for MariaDB iOS version was released.
Queries like 'select 1 + 1' can be run without a "from" clause/table name. [5] MySQL allows DUAL to be specified as a table in queries that do not need data from any tables. [6] It is suitable for use in selecting a result function such as SYSDATE() or USER(), although it is not essential. PostgreSQL: A DUAL-view can be added to ease porting ...
Major DBMSs, including SQLite, [5] MySQL, [6] Oracle, [7] IBM Db2, [8] Microsoft SQL Server [9] and PostgreSQL [10] support prepared statements. Prepared statements are normally executed through a non-SQL binary protocol for efficiency and protection from SQL injection, but with some DBMSs such as MySQL prepared statements are also available using a SQL syntax for debugging purposes.
No command can be performed against a database without an "open and available" connection to it. Connections are built by supplying an underlying driver or provider with a connection string , which is a way of addressing a specific database or server and instance as well as user authentication credentials (for example, Server= sql_box; Database ...