---
title: "Glossary - Xata"
source: "https://xata.io/docs/opensource/pgstream/docs/glossary"
---

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- [CDC](https://en.wikipedia.org/wiki/Change_data_capture): Change Data Capture
- [WAL](https://www.postgresql.org/docs/current/wal-intro.html): Write Ahead Logging
- [LSN](https://pgpedia.info/l/LSN-log-sequence-number.html): Log Sequence Number
- [DDL](https://en.wikipedia.org/wiki/Data_definition_language): Data Definition Language

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