Hull and Outfitting

DB Functionality

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When an MDB is opened, a DB class instance is created for each opened DB.

The functionality offered by this class falls into the following categories:

Query the properties of the DB. for example, number, MULTIWRITE or not.
Returning the world element for that DB.
Session information. for example, when was the session written and by whom. There is a DbSession object that holds details on a database session.
Return the DbElement in the system DB that represents this DB. This DbElement can then be used to query system attributes and additional pseudo attributes.

The additional pseudo attributes available on the DbElement representing the DB are described below:

Attribute Name	Data Type	Qualifier	Description
ACCEDB	string		DB access
CLAIM	String		Implicit or explicit claims
CLCCNT	int		Claim list changes count
CSESS	String	int	Comment entered for specified session
DACC	String		Database access
DBLC	DbElement[]		List of LOCs belonging to a DB
DCLA	String		Database claim mode
DSESS	String	int	Date of specified session
EXPIRY	String		Protected DB Expiry date
EXTALS	DbElement[]		Extract ancestors
EXTCLS	DbElement[]		Extract children
EXTDES	DbElement[]		Extract descendants
EXTFAM	DbElement[]		Extract family
FILENAME	String		DB filename
FOREIGN	string		Originating project
HCCNT	int		Header/Extract list changes count
ISDBFR	bool		True if database is foreign
ISDRDB	Bool		True if database has drawings
ISWORK	bool		True if a working extract
LINKSN	int		Linked session on parent extract
LPROT	bool		Protected DB Flag
MDBCLS	DbElement[]		List of MDBs in which DB is current
MDBLS	DbElement[]		List of MDBs to which DB belongs
NACCNT	int		Non-additive changes count
NAMEDB	string		DB name
NXTDBN	int		Next DB number
NXTEXN	int		Next DB extract number
NXTFDB	int		Next DB file and DB number
NXTFLN	int		Next DB file number
PSESS	int	int	Previous session number
SIZEDB	int		Size of DB
STPDBS	DbElement[]		Stamps containing db
STPSES	Int[]		Sessions used in at least one stamp
STYPDB	string		DB sub type
TYPEDB	string		DB type
USESS	string	int	User creating session

In addition for any DbElement in any DB, the following pseudo attributes provide information on the current DB:

Attribute Name	Data Type	Qualifier	Description
DBAC	String		DB Access, MULTIWRITE or UPDATE
DBCL	String		DB Claim
DBCNTL	Bool		True if element is in a control DB
DBEXNO	int		DB Extract Number
DBFI	String		DB filename
DBFN	int		DB file number
DBNA	String		DB name
DBNU	int		DB Number
DBREF	DbElement		Reference of DB element
DBTY	String		DB type (DESI, CATA etc)
DBVAR	Bool		True if element is in a variant DB
DBWRITE	Bool		True if element is in a writable DB
WDBNA	STRING		Working DB name