Explain the various dashboard components in Salesforce?

Various Dashboard Components are:-

1. Chart - Use a chart when you want to show data graphically. You can choose from a variety of chart types.
2. Gauge - Use a gauge when you have a single value that you want to show within a range of custom values. For example, to create a dashboard that measures where your current closed opportunity amounts fall within a range of values, set the Minimum Value, Breakpoint #1 Value, Breakpoint #2 Value, and Maximum Value for the gauge. The ranges that you set can indicate poor, acceptable, and good performance. Set appropriate colors for each of these ranges to visually indicate progress. To create a gauge with only two ranges, leave Breakpoint #2 Value blank.Select Show Percentage or Show Total to display those values on the gauge. Values exceeding the maximum are shown as greater than 100%.
3. Metric - Use a metric when you have one key value to display. For example, if you have a report showing the total amount for all opportunities in the Closed, Commit, and Base Case stages in the current month, you can name that value and use it as a revenue target for the month displayed on the dashboard.
4. Table - Use a table to show a set of report data in column form. For example, to see the top 20 opportunities by amount, set Maximum Values Displayed to 20, click Customize Table and select opportunity name, amount, and other columns to display, choose the sort order, and set conditional highlighting. Available columns include all chart groupings and report summary fields, as well as the second-level grouping defined in the report.

Thanks.

A user can access dashboards from the Dashboards tab, depending on the dashboard folder permissions and user permissions. One dashboard can contain up to 20 components. Each component can be present in the form of a chart, table, or matrix. On top of that, you can also select the Visualforce page component type.

We will not discuss the Visualforce page as a component in detail in this book; this is just additional information. When standard components that are provided out of the box do not fit your requirements, use Visualforce page is an option.