# 20170725-01 **Summary:** This update changes high transaction volume tables to use INT instead of UUID \ **Category:** Performance Enhancement \ **Details:** In the original data schema entity addresses, names, and related sets all use 128-bit UUIDs. However, these UUIDs are never exposed to the outside world, they are only used internally which represents a performance hit when searching by these columns. This patch increases the performance of the SanteDB database by switching these to INT. \ **Bug / Issues:** N/A\ **Applies To:** OpenIZ Server, SanteDB Server\ **Impacted Versions:** 0.9.0.1\ **Status:** Released (July 25, 2017)\ **Impact:** Moderate \ **RDBMS:** PostgreSQL --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://help.santesuite.org/knowledgebase/fixpatch/20170725-01.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.