A clustered index determines the physical order of data in a table.

Use device-orientation for questions related to coding for both landscape and portrait modes of a device which can be rotated by the user

A simple, GPL-licensed command-line tool for manipulating PDF documents.

This event is triggered when when the user is pressing a key or holding down a key.

The concept of linking a single individual's digital identity across multiple (and usually disparate) IT systems. Federated identity is the larger concept encompassing narrow implementations such as Single-sign on (SSO).

Bigtable is a distributed storage system (built by Google) for managing structured data that is designed to scale to a very large size: petabytes of data across thousands of commodity servers.

Mockery is a PHP library used to create Mocks of Objects for testing purpose.

Repo is a repository management tool that Android built on top of Git. Repo unifies the many Git repositories when necessary, does the uploads to our revision control system, and automates parts of the Android development workflow. Repo is not meant to replace Git, only to make it easier to work with Git in the context of Android. The repo command is an executable Python script that you can put anywhere in your path.