OpenMetadata/openmetadata-docs/content/v1.2.x/how-to-guides/data-quality-profiler/tab.md

---
title: Profiler and Data Quality Tab
slug: /how-to-guides/data-quality-profiler/tab
---

# Profiler and Data Quality Tab

The Profiler & Data Quality tab is displayed only for Tables. It has three sub-tabs for **Table Profile, Column Profile, and Data Quality**. 

## Table Profile Tab

The table profile helps to monitor and understand the table structure. It displays the number of **rows and columns** in the table. You can view these details over a timeframe to understand how the table has been evolving. It displays the **profile sample** either as an absolute number or as a percentage of data. You also get details on the **size of the data** as well as when the table was created.

{% image
src="/images/v1.2/how-to-guides/quality/tp.png"
alt="Table Profile"
caption="Table Profile"
/%}

The Table Profile tab also displays timeseries graphs on **Data Volume, Table Updates, and Volume Change**. 

### Data Volume

The **Data Volume** chart gives an overview on how the data is evolving across a time period. 

{% image
src="/images/v1.2/how-to-guides/quality/dv.png"
alt="Table Profile: Data Volume"
caption="Table Profile: Data Volume"
/%}

### Table Updates
In **Table Updates** chart, users can view the changes that happened in the table in terms of data inserts, updates, and deletes.

{% image
src="/images/v1.2/how-to-guides/quality/tu.png"
alt="Table Profile: Table Updates"
caption="Table Profile: Table Updates"
/%}

### Volume Change

In **Volume Change** chart, users can view the changes that happened in the table in terms of data volume for inserts, updates, and deletes.

{% image
src="/images/v1.2/how-to-guides/quality/vc.png"
alt="Table Profile: Volume Change"
caption="Table Profile: Volume Change"
/%}

## Column Profile Tab

The Column Profile tab provides a summary of table metrics similar to the Table Profile tab. It displays the number of **rows and columns** over a period of time. It displays the **profile sample** either as an absolute number or as a percentage of data. You also get details on the **size of the data** as well as when the table was created.

The column profile helps to monitor and understand the column structure with a summary of metrics for every column. You can view the type of each column, the value count, null value %, distinct value %, unique %, the tests run as well as the test status.

{% image
src="/images/v1.2/how-to-guides/quality/cp.png"
alt="Column Profile of a Table"
caption="Column Profile of a Table"
/%}

By clicking on any column, you can view more detailed reports about that column.

{% image
src="/images/v1.2/how-to-guides/quality/cp1.png"
alt="Column Profile of a Column"
caption="Column Profile of a Column"
/%}

The Column Profile for a particular column also displays timeseries graphs on **Data Counts, Data Proportions, Data Range, Data Aggregate, Data Quartiles, and Data Distribution**. Based on the type of column you are viewing, you can verify the accuracy of the data values.

### Data Counts

The data counts chart provides information on the **Distinct Count, Null Count, Unique Count, and Values Count**.

{% image
src="/images/v1.2/how-to-guides/quality/dc.png"
alt="Column Profile: Data Counts"
caption="Column Profile: Data Counts"
/%}

### Data Proportions

The data proportions chart displays the **Distinct, Null, and Unique Proportions**.

{% image
src="/images/v1.2/how-to-guides/quality/dp.png"
alt="Column Profile: Data Proportions"
caption="Column Profile: Data Proportions"
/%}

### Data Range

The length of the string that are stored in the database is profiled. The data range displays the Minimum, Maximum, and Mean values, which can be helpful for users who are doing an NLP or Text analysis.

{% image
src="/images/v1.2/how-to-guides/quality/dr.png"
alt="Column Profile: Data Range"
caption="Column Profile: Data Range"
/%}

### Data Aggregate

{% image
src="/images/v1.2/how-to-guides/quality/da.png"
alt="Column Profile: Data Aggregate"
caption="Column Profile: Data Aggregate"
/%}

### Data Quartiles

This chart displays the First Quartile, Median, Inter Quartile Range, and the Third Quartile.

{% image
src="/images/v1.2/how-to-guides/quality/dq.png"
alt="Column Profile: Data Quartiles"
caption="Column Profile: Data Quartiles"
/%}

### Data Distribution

The distribution of the character length inside the column is displayed to help you get a sense of the structure of your data.

{% image
src="/images/v1.2/how-to-guides/quality/dd.png"
alt="Column Profile: Data Distribution"
caption="Column Profile: Data Distribution"
/%}

## Data Quality Tab

Data quality tests can be run on the sample data. We can add tests at the table and column level. The Data Quality tab displays the total number of tests that were run, and also the number of tests that were successful, aborted, or failed. The list of test cases displays the details of the table or column on which the test was run.

{% image
src="/images/v1.2/how-to-guides/quality/dq1.png"
alt="Profiler & Data Quality"
caption="Profiler & Data Quality"
/%}

You can click on a Test Case to view further details. You can use a time filter on these reports. You can also edit these tests by clicking on the pencil icon next to each test.

{% image
src="/images/v1.2/how-to-guides/quality/dq2.png"
alt="Details of a Test Case"
caption="Details of a Test Case"
/%}

{%inlineCallout
  color="violet-70"
  bold="How to Write and Deploy No-Code Test Cases"
  icon="MdArrowForward"
  href="/how-to-guides/data-quality-profiler/test"%}
  Verify your data quality with table and column level tests.
{%/inlineCallout%}