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==Data Types==
* {{Type|Num}}: compressed integer (1-5 bytes)
* {{Type|Token}}: length (<code>{{Type|Num</code>}}) and bytes of UTF8 byte representation* {{Type|doubleDouble}}: number, stored as token* {{Type|booleanBoolean}}: boolean (1 byte, <code>00</code> or <code>01</code>)
* {{Type|TokenSet}}: key array (<code>Tokens</code>), next/bucket/size arrays (<code>Nums</code>)
* {{Type|Nums}}, {{Type|Tokens}} and {{Type|Doubles}} are arrays of values, and introduced with the number of entries ({{Type|Num}})
==inf.basex==
| valign='top' | [https://github.com/BaseXdb/basex/blob/master/src/main/java/org/basex/data/DiskData.java DiskData()]
|-
| valign='top' | '''2.1. Name Index'''<br/>ElementTag/attribute names| 1. Token set, storing all names ({{Type|TokenSet}})<br />2. One StatsKey instance per entry:<br/>2.1. Content kind ({{Type|Num}}):<br />2.1.1. Number: min/max ({{Type|Doubles}})<br />2.1.2. Category: number of entries ({{Type|Num}}), entries ({{Type|Tokens}})<br />2.2. Number of entries ({{Type|Num}})<br />2.3. Leaf flag ({{Type|Boolean}})<br />2.4. Maximum text length ({{Type|Double}}; legacy, could be {{Type|Num}})
| valign='top' | [https://github.com/BaseXdb/basex/blob/master/src/main/java/org/basex/index/Names.java Names()]<br/>[https://github.com/BaseXdb/basex/blob/master/src/main/java/org/basex/util/hash/TokenSet.java TokenSet.read()]<br/>[https://github.com/BaseXdb/basex/blob/master/src/main/java/org/basex/index/StatsKey.java StatsKey()]
|-
| 1. Token set, storing prefixes ({{Type|TokenSet}})<br/>2. Token set, storing URIs ({{Type|TokenSet}})<br/>3. NSNode:<br/>3.1. pre value ({{Type|Num}})<br/>3.2. References to prefix/URI pairs ({{Type|Nums}})<br/>3.3. Number of children ({{Type|Num}})<br/>3.4. Recursive generation of child nodes (→ 3)
| valign='top' | [https://github.com/BaseXdb/basex/blob/master/src/main/java/org/basex/data/Namespaces.java Namespaces()]<br/>[https://github.com/BaseXdb/basex/blob/master/src/main/java/org/basex/data/NSNode.java NSNode()]
|-
| valign='top' | '''2.4. Document Index'''
| Array of integers, representing the distances between all document pre values ({{Type|Nums}})
| valign='top' | [https://github.com/BaseXdb/basex/blob/master/src/main/java/org/basex/index/DocIndex.java DocIndex()]
|}
