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Disclosed is a mechanism for sharing a metadata store between applications with selectable shared access and update of metadata objects.
English (United States)
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A mechanism for sharing a metadata store between applications with selectable shared access and update of metadata objects .
In order to avoid the necessity of maintaining a metadata store for each application which uses metadata and ways to transfer metadata between the applications when it is necessary for the metadata to be shared, it is desirable to share a single metadata store among several applications. In order to make this possible a method is required to allow the metadata belonging to the multiple metadata using applications to be kept private to an application when it is not to be shared, shared for reading by other applications when it should be visible to them, and shared for write by multiple applications when necessary. This mechanism allows an application to create metadata objects within the shared metadata store which are visible only to the creating application, and to selectively mark individual metadata objects as readable or readable and writable to the other applications using the metadata store on an application by application basis. This allows complete flexibility of control of the shared metadata store.
When an application initiates a metadata connection for the first time it registers itself with the metadata store using an application name. This makes the application known to the metadata store. Then each time the application connects to the metadata store it identifies itself by using the same application name.