> For the complete documentation index, see [llms.txt](https://docs.tibero.com/en_tibero-technical-guides/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tibero.com/en_tibero-technical-guides/getting-started/migration/data-types.md).

# Data types

## ORACLE

The following is a comparison of data types between Oracle and Tibero.

<table><thead><tr><th width="306">Oracle</th><th>Tibero</th></tr></thead><tbody><tr><td>CHAR</td><td>CHAR</td></tr><tr><td>VARCHAR</td><td>VARCHAR</td></tr><tr><td><p> </p><p>VARCHAR2</p></td><td><p>VARCHAR2</p><p>(It is created as VARCHAR internally but functions the same as Oracle's VARCHAR2)</p></td></tr><tr><td>NCHAR</td><td>NCHAR</td></tr><tr><td>NVARCHAR</td><td>NVARCHAR</td></tr><tr><td><p> </p><p>NVARCHAR2</p></td><td><p>NVARCHAR2</p><p>(It is created as NVARCHAR internally but functions the same as Oracle's NVARCHAR2)</p></td></tr><tr><td>BLOB</td><td>BLOB</td></tr><tr><td>CLOB</td><td>CLOB</td></tr><tr><td>NCLOB</td><td>NCLOB</td></tr><tr><td>LONG</td><td>LONG</td></tr><tr><td>NUMBER</td><td>NUMBER</td></tr><tr><td>NUMERIC</td><td><p>NUMERIC </p><p>(It is created as NUMBER internally) </p></td></tr><tr><td>INT</td><td><p>INT </p><p>(It is created as NUMBER internally) </p></td></tr><tr><td>DECIMAL</td><td>DECIMAL<br>(It is created as NUMBER internally) </td></tr><tr><td>DOUBLE</td><td>NUMBER</td></tr><tr><td>FLOAT</td><td>FLOAT<br>(It is created as NUMBER internally) </td></tr><tr><td>REAL</td><td>REAL<br>(It is created as NUMBER internally) </td></tr><tr><td>SMALLINT</td><td>SMALLINT<br>(It is created as NUMBER internally) </td></tr><tr><td>BINARY_FLOAT</td><td>NUMBER</td></tr><tr><td>BINARY_DOUBLE</td><td>NUMBER</td></tr><tr><td>DATE</td><td>DATE</td></tr><tr><td>TIMESTAMP</td><td>TIMESTAMP</td></tr><tr><td>BFILE</td><td>Tibero does not support BFILE, so bypass by using BLOB</td></tr><tr><td>RAW</td><td>RAW</td></tr><tr><td>LONG RAW</td><td>LONG RAW</td></tr><tr><td>XMLTYPE</td><td>XMLTYPE <br>(Syntax changes are required as the creation syntax differs slightly: Oracle uses SYS.XMLTYPE, while Tibero uses XMLTYPE)<br><br>Oracle : SYS.XMLTYPE, Tibero : XMLTYPE)</td></tr><tr><td>GEOMETRY</td><td>GEOMETRY</td></tr></tbody></table>

###

***

## MS-SQL<br>

The following is a comparison of data types between MS-SQL and Tibero.

<table><thead><tr><th width="306">MS-SQL</th><th>Tibero</th></tr></thead><tbody><tr><td>VARCHAR(MAX)</td><td>CLOB</td></tr><tr><td>NVARCHAR(MAX)</td><td>NCLOB</td></tr><tr><td>VARBINARY(MAX)</td><td>BLOB</td></tr><tr><td>UNIQUEIDENTIFIER</td><td>VARCHAR</td></tr><tr><td>SQL_VARIANT LONG</td><td>RAW</td></tr><tr><td>BIGINT</td><td>NUMBER</td></tr><tr><td>NTEXT</td><td>CLOB</td></tr></tbody></table>

###

***

## Sybase<br>

The following is a comparison of data types between Sybase and Tibero.<br>

<table><thead><tr><th width="319">Sybase</th><th>Tibero</th></tr></thead><tbody><tr><td>TINYINT NUMBER</td><td>NUMBER</td></tr><tr><td>SMALLINT NUMBER</td><td>NUMBER</td></tr><tr><td>INT NUMBER</td><td>NUMBER</td></tr><tr><td>NUMERIC(P,S)</td><td>NUMBER(n,n)</td></tr><tr><td>DECIMAL(P,S)</td><td>NUMBER(n,n)</td></tr><tr><td>FLOAT(PRECISION)</td><td>NUMBER</td></tr><tr><td>DOUBLE(PRECISION)</td><td>NUMBER</td></tr><tr><td>REAL NUMBER</td><td>NUMBER</td></tr><tr><td>SMALLMONEY</td><td>NUMBER(10,4)</td></tr><tr><td>MONEY</td><td>NUMBER(19,4)</td></tr><tr><td>SMALLDATETIME</td><td>DATE or TIMESTAMP</td></tr><tr><td>DATETIME</td><td>DATE or TIMESTAMP</td></tr><tr><td>CHAR(N)</td><td>CHAR(N)</td></tr><tr><td>VARCHAR(N)</td><td>VARCHAR(N)</td></tr><tr><td>UNICHAR(N)</td><td>NCHAR(N)</td></tr><tr><td>UNIVARCHAR(N)</td><td>NVARCHAR(N)</td></tr><tr><td>NCHAR(N)</td><td>NCHAR(N)</td></tr><tr><td>NVARCHAR(N)</td><td>NVARCHAR(N)</td></tr><tr><td>BINARY(N)</td><td>CLOB</td></tr><tr><td>VARBINARY(N)</td><td>BLOB</td></tr><tr><td>BIT</td><td>NUMBER(1) or CHAR(1)</td></tr><tr><td>TEXT CLOB</td><td>CLOB</td></tr><tr><td>IMAGE</td><td>BLOB</td></tr></tbody></table>

###


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## 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, and the optional `goal` query parameter:

```
GET https://docs.tibero.com/en_tibero-technical-guides/getting-started/migration/data-types.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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.