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Basic Building Blocks (Magic xpa 3.x)

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Created ByKnowledge Migration User
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Basic Building Blocks (Magic xpa 3.x)

A Magic xpa task is built in three basic sections: the Data View, Logic, and Forms. In a Rich Client task:

  • Data View is built on the server.

  • The Forms interact with the user.

  • Some Logic handlers execute on the server, some on the client, and some are mixed.

We'll take a look at each of these sections in turn.

However, variables, functions, user functions, and expressions are used in all of these sections.

  • Variables are declared in the Data View. Usually they are neutral, but some are server-side.

  • Functions are built-in to Magic xpa, and by their nature are client-side, server-side, or Neutral.

  • User functions are created by you, the developer, and their side depends on the operations and variables they use.

  • Expressions are built using the items above. These are especially important because they are used in properties all over the task, in Ranges, Inits, Conditions, Controls, and Forms.

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