Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1weYSs-004rmm-2p for pgsql-docs@arkaria.postgresql.org; Tue, 30 Jun 2026 13:25:26 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.96) (envelope-from ) id 1weYSq-008KaU-1N for pgsql-docs@arkaria.postgresql.org; Tue, 30 Jun 2026 13:25:24 +0000 Received: from makus.postgresql.org ([2001:4800:3e1:1::229]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1we4sh-001LZ9-0P for pgsql-docs@lists.postgresql.org; Mon, 29 Jun 2026 05:50:07 +0000 Received: from mahout.postgresql.org ([2001:4800:3e1:1::227]) by makus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1we4sf-00000000iGn-1nql for pgsql-docs@lists.postgresql.org; Mon, 29 Jun 2026 05:50:06 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=postgresql.org; s=20171124; h=Message-ID:Date:Reply-To:Cc:From:To:Subject: Content-Transfer-Encoding:MIME-Version:Content-Type:Sender:Content-ID: Content-Description:In-Reply-To:References; bh=kld5sht3o6AeCPwPq+VlohFZ+jq3odTTQVYFMU74oTw=; b=ZuNwv1XJa5jeDmwX5fmw7Q3EKa LG3pebjd0RKCKi4mlvFEXH04kSKpw3VmtG0XHDthcaQIE4rpThi2sg+zdBvPG7Nt+UqF7lTCFae8w wUsRhySGtTcMe95PqymtgY3yoTJU8XhMqETgDpKRE7K5auuNJouQSju3TDg80OYLS6aFZeuNC4TZZ Xc11hRBgKGytC44i7I/3NhwadKKRF89/7VDFEkp/FBnG02pha6f6vTYQdq1dQN07+nBkoFbirlApk Q6w3zCWFcTHHv5nzldDc1VTnH19PPKhJ9W0Tu55wVtwlokjV249wN8pljB2mK6/TXASlf2FMF8cLi cXpB0klQ==; Received: from wrigleys.postgresql.org ([2a02:16a8:dc51::60]) by mahout.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1we4se-0087UE-3C for pgsql-docs@lists.postgresql.org; Mon, 29 Jun 2026 05:50:05 +0000 Received: from localhost ([127.0.0.1] helo=wrigleys.postgresql.org) by wrigleys.postgresql.org with esmtp (Exim 4.96) (envelope-from ) id 1we4sc-005Wvx-2V for pgsql-docs@lists.postgresql.org; Mon, 29 Jun 2026 05:50:02 +0000 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Subject: glossary Data page To: pgsql-docs@lists.postgresql.org From: PG Doc comments form Cc: y.saburov@gmail.com Reply-To: y.saburov@gmail.com, pgsql-docs@lists.postgresql.org Date: Mon, 29 Jun 2026 05:49:11 +0000 Message-ID: <178271215189.108992.1165691496017632222@wrigleys.postgresql.org> X-Auto-Response-Suppress: All Auto-Submitted: auto-generated List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk The following documentation comment has been logged on the website: Page: https://www.postgresql.org/docs/18/glossary.html Description: > The basic structure used to store relation data. All pages are of the same size. Data pages are typically stored on disk, each in a specific file, and can be read to shared buffers where they can be modified, becoming dirty. They become clean when written to disk. New pages, which initially exist in memory only, are also dirty until written. Am I correct in understanding from this description that all files on the disk will be the same size? One page =3D one file?