![]() ![]() The next 2 bytes of the page header, pd_pagesize_version, store both the page size and a version indicator. These contain byte offsets from the page start to the start of unallocated space, to the end of unallocated space, and to the start of the special space. This is followed by three 2-byte integer fields ( pd_lower, pd_upper, and pd_special). ![]() Next is a 2-byte field containing flag bits. The second field contains the page checksum if data checksums are enabled. The first field tracks the most recent WAL entry related to this page. The first 24 bytes of each page consists of a page header ( PageHeaderData). New item identifiers are allocated from the start of this area, new items from the end. Contains general information about the page, including free space pointers.Īrray of item identifiers pointing to the actual items. ![]()
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