By Jason Ouellette
With Salesforce.com’s Force.com platform, you could construct and set up strong cloud-based company functions quicker than ever earlier than. Now, Jason Ouellette supplies all of the useful, technical tips you want to utilize the most recent Force.com releases on your personal customized cloud applications.
Throughout, he provides new code and up-to-date most sensible practices for quickly prototyping, development, and trying out production-quality Force.com suggestions. This edition’s wide new assurance comprises Developer Console, JSON, Streaming and Tooling APIs, Bulk API, Force.com Canvas, relaxation integration, help for internet MVC frameworks, Dynamic Apex and Visualforce, and an all-new bankruptcy on cellular consumer interfaces.
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In most cases, the two styles of unique identifiers can be used interchangeably. So when you are designing your Force. com database, there is no need to add a field to contain a unique identifier. Validation Rules Validation rules place restrictions on the values of a new or updated record. They prevent users and programs from inserting data that your application defines as invalid. Rules are defined in an expression language similar to the function language found in the cells of a Microsoft Excel worksheet.
Applications can be readily consolidated because they share the same infrastructure. For example, you might keep an old user interface online while a new one is being run in parallel, both writing to the same set of objects. com removes a sizable chunk of infrastructure complexity, preserving more intellectual bandwidth to devote to tackling the hard problems specific to your business. com has a rich developer ecosystem, including discussion groups for reaching out to the development community on specific subjects, a source-code repository for open source projects, a Web site called AppExchange where you can browse for free and paid extensions to the platform, services companies to help you plan and implement your larger projects, and Ideas, a site for posting your ideas for enhancing the platform.
Nested Resultsets In SQL, querying two tables in a one-to-many relationship without aggregate functions and GROUP BY results in a cross product of the rows. 4. OrderId Assume that there are two orders (1 and 2), each with three line items (1–3 and 4–6). 1 shows the results of executing the query. 5 shows an equivalent query in SOQL. 5 Relationship Query in SOQL SELECT OrderId, (SELECT LineItemId FROM OrderLineItems) FROM Orders Note the lack of a WHERE clause to perform the join and the use of a subquery to nest the line items.