To gain more control when importing objects, you can import objects first into a “staging area” to verify the incoming objects before bringing them into the application proper. ZOM provides a staging area called the “Shadow Object Dictionary” which is a mirror image of the Zim Object Dictionary. Once in the Shadow Object Dictionary, you…
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Combining ZOMImport and ZOMExport with keywording and object locking can give you a great deal of control over the management of the application as a whole. Let’s assume that the master is to receive Steve’s work, but needs to protect the application from any changes that Steve has made outside his defined task of user…
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A typical configuration for projects involving multiple developers is separate development environments for each developer and a master environment that contains the combined results of the project team. This development approach is referred to as master-slave development. Each developer’s environment is called a “slave” to the “master” environment. From time to time, a developer merges…
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Merging changes from one development environment into another is done by exporting the changes from the first (i.e., source) environment using ZOMExport and then importing these changed objects into the second (i.e., target) environment using ZOMImport. The import process compares the incoming objects from the source environment with the objects in the target environment. New…
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When working on a team development project, you should first adjust the configuration of ZOM for each development environment so that objects from the various environments can be easily identified. The three configuration options of importance here are the environment code, the new keyword, and the changed keyword. You configure ZOM using the ZOMConfig command.…
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Zim contains a number of fixed object types. The objects in any application depend on each other in various ways. These dependencies among objects form a network of interrelationships. An EntitySet, for example, depends on its fields. If the definition of a field changes, then the definition of the EntitySet changes. A relationship object depends…
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The object dependency information can also be used to select un-referenced objects that are not used by any other object. In our example, there are three un-referenced objects: pMainMenu, PlacedBy and vJunkVar. Un-referenced objects can be selected using the “u” selection criteria, as shown in the following example: ZOMList +p u Objects Found by Unreferenced…
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Dependency implosion is the process of finding the objects which depended on (i.e., used) by a given object, and so on down the dependency tree. There are three different kinds of implosion: immediate, creation, and program. As an example, to list all of objects that are used by pMainMenu, enter ZOMList pMainMenu +i The result…
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Dependency Explosion is the process of finding the objects which depend on (i.e., uses) a given object, and so on up the dependency tree. There are three different kinds of explosion: immediate, creation, and program. As an example, let’s suppose we want list all of the objects that use Customers: ZOMList Customers +x The result…
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Objects are imported using the ZOMImport command. ZOMImport imports all objects described in the ASCII files produced by ZOMExport. Therefore, before you can use ZOMImport, you must first place the ZOMExport files in your database directory. Then, to invoke ZOMImport, enter ZOMImport You can also import Z41 files that are compatible with older versions of…
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