---
title: "Element: patterndb"
url: "https://axoflow.com/docs/axosyslog-core/4.28/chapter-parsers/chapter-patterndb/reference-parsers-pattern-databases/reference-patterndb-schemes/patterndb-scheme-patterndb/"
last_modified: "2023-07-15T16:57:02+02:00"
---

> For the complete documentation index, see [llms.txt](https://axoflow.com/docs/axosyslog-core/4.28/llms.txt).

# Element: patterndb

## Location

/*patterndb*

## Description

The container element of the pattern database.

## Attributes

- *version*: The schema version of the pattern database. The current version is `4`.
- *pubdate*: The publication date of the XML file.

## Children

- *ruleset*

## Example

```xml
   <patterndb version='4' pub_date='2010-10-25'>
```

Last modified July 15, 2023: [Patterndb chapter formatting fixes (f7dfdaa0)](https://github.com/axoflow/axosyslog-core-docs/commit/f7dfdaa0fa045e2ae66345dc5a1c70a179726476)