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2-4 IBM Informix OnLine Database Server Administrator’s Guide
Dbspace and Blobspace............... 2-84
Database .................... 2-85
Tblspace .................... 2-85
Extent ..................... 2-85
Physical Log .................. 2-86
Logical Log ................... 2-86
Structure of the Root Dbspace .............. 2-87
Structure of a Regular Dbspace ............. 2-89
Structure of an Additional Dbspace Chunk ......... 2-90
Structure of a Blobspace ................ 2-91
Structure of a Blobspace or Dbspace Mirror Chunk ...... 2-92
OnLine Limits for Chunks ............... 2-93
Reserved Pages ................... 2-95
PAGE_PZERO .................. 2-97
PAGE_CONFIG ................. 2-97
PAGE_CKPT .................. 2-97
PAGE_DBSP .................. 2-99
PAGE_PCHUNK .................2-100
PAGE_MCHUNK.................2-101
PAGE_ARCH ..................2-102
Chunk Free-List Page .................2-103
tblspace Tblspace ..................2-104
tblspace Tblspace Entries ..............2-105
Tblspace Number.................2-105
tblspace Tblspace Size ...............2-106
tblspace Tblspace Bit-Map Page ............2-107
Database Tblspace ..................2-107
Create a Database: What Happens on Disk .........2-108
Allocate Disc Space ................2-109
Track Systems Catalogs...............2-109
OnLine Limits for Databases ..............2-110
Create a Table: What Happens on Disk...........2-110
Allocate Disc Space ................2-111
Add Entry to tblspace Tblspace ............2-111
Add Entry to System Catalog Tables ..........2-111
Create a Temporary Table: What Happens on Disk.......2-113
Placement ...................2-113
Tracking ....................2-113
Cleanup ....................2-114