PostgreSQL är en databashanterare baserad på öppen källkod.Den följer SQL-standarden i mycket hög grad och erbjuder avancerade funktioner som vissa enklare databaser saknar, exempelvis lagrade procedurer, triggers och stöd för användarskapade funktioner skrivna i en mängd olika språk. Systemet som senare skulle bli PostgreSQL började utvecklas på University …

PostgreSQL este un sistem de baze de date relationale. Este disponibil gratuit sub o licentă open source de tip BSD. PostgreSQL nu este controlat de nici o companie, își bazează dezvoltarea pe o comunitate răspândită la nivel global, precum și câteva companii dezvoltatoare.

PostgreSQL on avoimena lähdekoodina jaettava tietokannan hallintajärjestelmä, joka on lisensoitu BSD-lisenssin kaltaisella lisenssillä. PostgreSQL perustuu relaatiomallille, mutta sille on myös spatiaalisia laajennuksia kuten PostGIS . Se on vaihtoehto muille vapaan lähdekoodin tietokantajärjestelmille, kuten MySQL tai Firebird, sekä ...

PostgreSQL adalah sebuah sistem basis data yang disebarluaskan secara bebas menurut Perjanjian lisensi BSD. Peranti lunak ini merupakan salah satu basis data yang paling banyak digunakan saat ini, selain MySQL dan Oracle. PostgreSQL menyediakan fitur yang berguna untuk replikasi basis data. Fitur-fitur yang disediakan PostgreSQL antara lain DB ...

PostgreSQL是一个開源的 物件-關聯式資料庫管理系统，在類似BSD授權與MIT授權的PostgreSQL授權下发行。. PostgreSQL這個單字的拼法讓有些人覺得很難讀，特别是那些把SQL讀作"sequel"的人。 PostgreSQL開發者把它讀作"post-gress-Q-L"。（Audio sample ，5.6k MP3）。 它也經常被简稱为"postgres"。

O PostgreSQL é um projeto open source coordenado pelo PostgreSQL Global Development Group. Embora as atividades do grupo sejam patrocinadas por diversas organizações de todo o mundo, seu modelo de desenvolvimento é o modelo Bazar (originalmente apresentado em A Catedral e o Bazar de Eric S. Raymond ). Portanto, o desenvolvimento do ...

PostgreSQL je voľne šíriteľný objektovo-relačný databázový systém (systém riadenia báz dát), uvoľnený pod flexibilnou licenciou BSD. Ponúka alternatívu k ostatným voľne šíriteľným databázovým systémom (ako sú MySQL, Firebird, MaxDB a iné), ako aj k proprietárnym (akými sú napr. Oracle, DB2 od IBM či Microsoft SQL ...

Nov 03, 2022 · PostgreSQL's solution. The full_page_writes option, on by default and quite rarely turned off, defends against torn writes. The idea is to switch to "physical" logging for the first modification of each page after a checkpoint, which is a fancy way of saying that we dump the whole 8KB page into the transaction log instead of describing how to ...

PostGIS ( / ˈpoʊstdʒɪs / POST-jis) is an open source software program that adds support for geographic objects to the PostgreSQL object-relational database. PostGIS follows the Simple Features for SQL specification from the Open Geospatial Consortium (OGC). Technically PostGIS was implemented as a PostgreSQL external extension.

EnterpriseDB ( EDB ), a privately held company based in Massachusetts, provides software and services based on the open-source database PostgreSQL (also known as Postgres), and is one of the largest contributors to Postgres. [2] EDB develops and integrates performance, security, and manageability enhancements into Postgres to support enterprise ...

Aug 26, 2021 · Performance Analysis Tools. This page is focused on tools for collecting data outside of PostgreSQL, in order to learn more about the system as a whole, about PostgreSQL's use of system resources, about things that may be bottlenecks for PostgreSQL's performance, etc. Most of the time, the tools PostgreSQL provides internally will be more than ...

پروانه پستگرس‌کیوال [۲] [۳] [۴] وبگاه. www .postgresql .org. پروانه پستگرس‌کیوال. منتشرکننده. گروه توسعه سراسری پستگرس‌کیوال. نمایندگان دانشگاه کالیفرنیا. سازگار با رهنمودهای نرم‌افزار آزاد دبیان.

Michael Ralph Stonebraker (born October 11, 1943) is a computer scientist specializing in database systems.Through a series of academic prototypes and commercial startups, Stonebraker's research and products are central to many relational databases.He is also the founder of many database companies, including Ingres Corporation, Illustra, Paradigm4, …

Oct 01, 2014 · USING (foo,bar,baz) is just a macro for: t1.foo = t2.foo AND t1.bar = t2.bar AND t1.baz = t2.baz. However, if you wanted the treat-null-as-a-known-value alternative you would need: IS NOT DISTINCT FROM. The task because slightly more verbose and daunting when joining a table, because there are no shorthands for the IS NOT DISTINCT FROM form.