Well you need a knowledge of whatever kind of programming language runs on the platform you're making the app for. iOS (Objective C), Android and WebOS (Java, C, C+, C++, and Objective C).
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Web applications are stored on a server and delivered to users over the Internet. A Web application is usually a three-tier structure, comprising a User Service tier (allowing user access to the...
An enterprise application is any application that applies to an entire enterprise (accross a copy). Examples would be email solutions (such as outlook) to pay and hr systems such as Peoplesoft and...