DataBase Functionality

When an Multiple Database (MDB) is opened, a Database (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: