---
title: "OleDbDataSource Element"
---


This element contains information about a connection to a relational database via OLEDB provider. You can use it only with [SqlQuery](/words/sharepoint/sqlquery-element/) elements to define queries. Please note that storing database user name and password in the connection string may be insecure.

| Name | Cardinality | Has Children | Description |
| :- | :- | :- | :- |
| `ConnectionString` | 1 | No | Data source connection string. It must not be empty. |