User Manual

JKBMS
Data Structure
The BMS uses hierarchical, or parent-child, relationships to
build a tree structure of the blast data. Each type of data
object (e.g. pit, bench, blast) is given a unique
identification, and can be both a child of one object and a
parent to others. A single sequence of parents and children
is called a branch, with each point in the branch, called a
node, holding one object. The starting point for a tree is
called the root object. A single BMS database can have
several root objects, and thus several trees.
Data Structure
Root
Object
Parent of
Domain
Objects
Children
Each object in the tree is defined by three properties: its
unique object ID number (shown in the status bar), its
parent’s ID number, and the object type. Each object also
has a name which can be modified by the user.
Information is added to an object either by [double-click]
on the object or [right-click] and select an option from the
pop-up menu. Some objects do not accept any further
information (such as open pit or blast collection), and only
exist to help create a logical tree structure, similar to a
folder in Windows Explorer. Other objects hold data about
the object or a link to an external data source, or in some
cases both. In particular, detailed blast information is
stored in the original 2DBench, 2DRing or 2DFace
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