1. Metadatabase: stores the objects in the report. It stores all framework objects, report objects, configuration objects, and project settings. The function is similar to the function of data dictionary in a database. You can create your own metadatabase.
2. Project Source: A project source is a link to the metabase. All objects in the metadatabase are located under a project source.
3. The link between the project source and metadatabase includes two methods: direct mode and server mode.
Direct mode: two-tier mode, directly connected to the metabase through user/pwd
Server Mode: layer-3 mode. Use a defined intelligence server to link to the metabase.
If the project is to be published to the Web, deploy it on the server.
4. Project: a project can have multiple projects under its source. A project must specify a database instance. A database instance is the data source used for reporting, that is, a database warehouse. The data in the report comes from the database instance. You can select tables in the database instance for the project.
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