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A
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community
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model
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can
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be
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represented
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with
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different
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levels
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of
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detail
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to
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reflect
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different
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levels
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of
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detail
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in
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use
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cases,
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as
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shown
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in
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...
...
...
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.
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The
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"Community
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detail"
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and
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"UML
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diagrams"
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columns
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in
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the
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table
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provide
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a
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mapping
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from
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the
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use
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case
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levels
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to
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community
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modeling
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concepts
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and
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the
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associated
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UML
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for
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ODP
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notation.
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We
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illustrate
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these
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different
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levels
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of
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detail
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in
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community
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models
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using
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the
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simple
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Federated
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Repository
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example
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introduced
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in
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section
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...
...
...
.
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...
...
...
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can
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be
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considered
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a
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community
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model
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representation
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of
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the
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level
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0
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use
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case
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(summary
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use
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case)
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as
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it
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only
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identifies
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key
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roles
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in
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the
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community
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and
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the
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community
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objective.
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Note
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we
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also
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add
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a
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Policy
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package
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as
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a
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placeholder
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for
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future
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requirements.
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This
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model
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can
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be
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further
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refined
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by
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adding
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the
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high-level
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interaction
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called
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Repository
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Access
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between
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the
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user
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and
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the
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system
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(level
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2),
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as
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shown
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in
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Figure
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4.3-1.
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This
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level
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can
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be
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further
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refined
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by
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adding
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detail
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to
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the
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interactions,
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specifying
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types
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of
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access
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to
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the
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Repository,
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namely
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Query,
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Identify
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and
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Aggregate
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Data
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(level
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3).
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This
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is
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also
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depicted
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in
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the
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figure.
Figure 4.3-1
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Level
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2
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and
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Level
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3
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Use
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Cases
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