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4.3. VDB Content and Structure
		In Teiid Designer, the VDB file names use a 
.vdb file extension. VDBs are structurally just ZIP archive files containing 3 folders:
	- META-INF - containsvdb.xmldefinition file.
- runtime-inf - contains a binary INDEX file for each model included in your VDB.
- project folder - contains of the models you will be adding in the VDB Editor (that is,*.xmiand*.xsdfiles)
		When deployed, the metadata is consumed by JBoss Data Virtualization in order to create the necessary runtime metadata for your model definitions.
	
		The vdb.xml file contains:
	
- VDB name, version, properties
- contained model information (name, translator name, connection info)
- translator info
- data role definitions for the referenced models
- import VDB references
		Fortunately, Teiid Designer simplifies the management of your VDBs by providing a dedicated VDB Editor which maintains a consistent, valid 
vdb.xml file for you and assists in synchronizing your workspace models with any related models in your VDB. (See Section E.8.1, “VDB Editor”)