P2 Systems analysis tools and techniques for modelling business processes:
Modelling Business Tools Description Example Diagram Benefits Drawbacks
and Techniques
Entity Relational Diagram This is a sort of diagram *Visual representation *Limited representation of
(ERD) that demonstrates the *Effective connections.
relationships between communication *There is no evidence of
various entities (such as *Easy to understand data manipulation.
users, clients, or other *High flexibility *No industry consensus
objects) in an application exists for notation.
or database. They are
made when a new system
is being designed so that
the database's structure
can be understood by the
development team. They
can also be built on an
existing system to assist
the team in figuring out
how it operates and
identifying and fixing any
problems. Entity
Relationship Diagrams
represent the system and
database using a particular
set of symbols, such as
shapes and arrows.
Modelling Business Tools Description Example Diagram Benefits Drawbacks
and Techniques
Entity Relational Diagram This is a sort of diagram *Visual representation *Limited representation of
(ERD) that demonstrates the *Effective connections.
relationships between communication *There is no evidence of
various entities (such as *Easy to understand data manipulation.
users, clients, or other *High flexibility *No industry consensus
objects) in an application exists for notation.
or database. They are
made when a new system
is being designed so that
the database's structure
can be understood by the
development team. They
can also be built on an
existing system to assist
the team in figuring out
how it operates and
identifying and fixing any
problems. Entity
Relationship Diagrams
represent the system and
database using a particular
set of symbols, such as
shapes and arrows.
