# Introduction When you open a dataset, you have five different tabs: [Settings](#settings), [Columns](#columns), [View Data](#view-data), [Summary](#summary), and [Association ](#association)tabs.

### Settings First, on the **Settings** tab, you can re-upload the dataset, rename it, and change the description and the tag. You also have the information on the type, the ID, the creation date, and the updated date.

### Columns The **Columns** tab provides you the original name, the column name, the data type, and the data format of each column, that you can modify.

### View Data On the **View Data** tab, you have all the data with the number of columns and rows.

### Summary The **Summary** gives a simple analysis of each column with a graph. For numerical columns, it counts the number of null values; and calculates the sum, the mean, the standard deviation, the min, the max, the lower and upper quantile, and the median. For categorical columns, it counts the number of null values, of unique values, and the min and max length.

### Association The last part is the **Association** tab, which measures the relationship between two variables. The association between numerical variables is the correlation: * a zero correlation indicates no relationship between the variables * a correlation of +1 indicates a perfect positive correlation, meaning that as one variable goes up, the other goes up as well * a correlation of –1 indicates a perfect negative correlation, meaning that as one variable goes up, the other goes down If you need, you can use the *More details* button to better understand associations.

--- # 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://docs.graphite-note.com/graphite-note-documentation/datasets/introduction.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.