Tab is a user interface component to user creates to display custom object data.
There are three type of tabs.
1) Custom object tabs
Custom object tabs are the user interface for custom applications that you build in salesforce.com.
They look and behave like standard salesforce.com tabs such as accounts, contacts, and opportunities
2) Visualforce Tabs
Visualforce Tabs are custom tabs that display a Visualforce page. Visualforce tabs look and behave like standard salesforce.com tabs such as accounts, contacts, and opportunities.
3) Web Tabs
Web Tabs are custom tabs that display web content or applications embedded in the salesforce.com window. Web tabs make it easier for your users to quickly access content and applications they frequently use without leaving the salesforce.com application.
4) Lightning Component Tabs
Lightning Component tabs allow you to add Lightning Components to the navigation menu in Salesforce1.
5) Lightning Page Tabs
Lightning Page Tabs let you add Lightning Pages to the Salesforce1 navigation menu.
Lightning Page tabs don't work like other custom tabs. Once created, they don't show up on the All Tabs page when you click the Plus icon that appears to the right of your current tabs. Lightning Page tabs also don't show up in the Available Tabs list when you customize the tabs for your apps.
You can't access the Lightning Component tab outside of Salesforce1. For example, you can't access the Lightning Component tab from the full Salesforce site.
Note:- To create Tab, User Permissions Needed
Define a Custom object tabs to display data stored in your custom object records.
1) From Setup, enter Tabs in the Quick Find box, then select Tabs or Setup - Build - Create and click on Tabs.
2) Click New in the Custom Object Tabs related list.
3) Select the custom object to display in the custom tab. The label of the new tab is the same as the plural version of the custom object label.
4) Click the Tab Style lookup icon to display the Tab Style Selector.
5) Click a tab style to select the color scheme and icon for the custom tab.
6) Optionally, choose a custom link to use as the introductory splash page when users initially click the tab.
7) Enter a description of the tab, if desired, and click Next.
8) Choose the user profiles for which the new custom tab will be available.
9) Specify the custom apps that should include the new tab.
10) Select "Append tab to users' existing personal customizations" checkbox to add the tab to your users’ customized display settings if they have customized their personal display.
11) Click Save.
There are three type of tabs.
1) Custom object tabs
Custom object tabs are the user interface for custom applications that you build in salesforce.com.
They look and behave like standard salesforce.com tabs such as accounts, contacts, and opportunities
2) Visualforce Tabs
Visualforce Tabs are custom tabs that display a Visualforce page. Visualforce tabs look and behave like standard salesforce.com tabs such as accounts, contacts, and opportunities.
3) Web Tabs
Web Tabs are custom tabs that display web content or applications embedded in the salesforce.com window. Web tabs make it easier for your users to quickly access content and applications they frequently use without leaving the salesforce.com application.
4) Lightning Component Tabs
Lightning Component tabs allow you to add Lightning Components to the navigation menu in Salesforce1.
5) Lightning Page Tabs
Lightning Page Tabs let you add Lightning Pages to the Salesforce1 navigation menu.
Lightning Page tabs don't work like other custom tabs. Once created, they don't show up on the All Tabs page when you click the Plus icon that appears to the right of your current tabs. Lightning Page tabs also don't show up in the Available Tabs list when you customize the tabs for your apps.
You can't access the Lightning Component tab outside of Salesforce1. For example, you can't access the Lightning Component tab from the full Salesforce site.
Note:- To create Tab, User Permissions Needed
Define a Custom object tabs to display data stored in your custom object records.
1) From Setup, enter Tabs in the Quick Find box, then select Tabs or Setup - Build - Create and click on Tabs.
2) Click New in the Custom Object Tabs related list.
3) Select the custom object to display in the custom tab. The label of the new tab is the same as the plural version of the custom object label.
4) Click the Tab Style lookup icon to display the Tab Style Selector.
5) Click a tab style to select the color scheme and icon for the custom tab.
6) Optionally, choose a custom link to use as the introductory splash page when users initially click the tab.
7) Enter a description of the tab, if desired, and click Next.
8) Choose the user profiles for which the new custom tab will be available.
9) Specify the custom apps that should include the new tab.
10) Select "Append tab to users' existing personal customizations" checkbox to add the tab to your users’ customized display settings if they have customized their personal display.
11) Click Save.
