Working with Tables
Working with Tables Lesson 5 of Introduction to ArcGIS for
Emergency Managers
Federal Emergency Management AgencyPage 5-#E190: Introduction to
ArcGIS 9.x for HAZUS-MH UsersGoals and ObjectivesGoals: The goals
of this lesson are to explain the function of tables and to
demonstrate their role in creating graphs.After completing this
lesson, you will be able toIdentify and describe the structure,
anatomy, and function of tables and table elements in
ArcMapAssociate tables in ArcMapCreate graphs
Federal Emergency Management AgencyPage 5-#E190: Introduction to
ArcGIS 9.x for HAZUS-MH UsersTable StructureTables contain
information about features.Each feature class has an associated
table.Tables are opened from the table or layer context menu.
Federal Emergency Management AgencyPage 5-#E190: Introduction to
ArcGIS 9.x for HAZUS-MH UsersTable AnatomyBasic Properties:There is
one row for each geographic feature.Tables have unique field
names.Table values are called attributes.ArcGIS supports many types
of tabular data:StringNumericDateBoolean (true/false)BLOB (binary
large object)
Federal Emergency Management AgencyPage 5-#E190: Introduction to
ArcGIS 9.x for HAZUS-MH UsersField Options Sort in ascending or
descending orderAdvanced SortingSummarizeStatisticsField
CalculatorCalculate GeometryTurn Field OffFreeze/Unfreeze
ColumnDelete Field
Federal Emergency Management AgencyPage 5-#E190: Introduction to
ArcGIS 9.x for HAZUS-MH UsersField PropertiesOptions: Define an
alias that is used in the table window as well as elsewhere in
ArcMapControl visibilityControl format for numeric fields
Federal Emergency Management AgencyPage 5-#E190: Introduction to
ArcGIS 9.x for HAZUS-MH UsersTable OptionsFind and Replace (in Edit
mode)Several selection optionsAdd new fieldsControl field
visibility Show field aliasesControl field and table
appearanceJoins and relatesCreate graphs and reportsPrint or
export
Federal Emergency Management AgencyPage 5-#E190: Introduction to
ArcGIS 9.x for HAZUS-MH UsersAssociating Tables Attributes can be
stored in a feature table or an additional table.You can associate
tables with common values.
Federal Emergency Management AgencyPage 5-#E190: Introduction to
ArcGIS 9.x for HAZUS-MH UsersTable CardinalityCardinality refers to
how many A objects are related to B objects.You must know
cardinality before associating tables.
Federal Emergency Management AgencyPage 5-#E190: Introduction to
ArcGIS 9.x for HAZUS-MH UsersActivity: CardinalityWhat relations
are present in the following examples?A single building per
parcelMany buildings in a single parcelA single parcel contains
many buildings
Federal Emergency Management AgencyPage 5-#E190: Introduction to
ArcGIS 9.x for HAZUS-MH UsersActivity: CardinalityWhat relations
are present in the following examples?A single building per
parcelOne to one.Many buildings in a single parcelMany to one.A
single parcel contains many buildingsOne to Many.
Federal Emergency Management AgencyPage 5-#E190: Introduction to
ArcGIS 9.x for HAZUS-MH UsersJoins vs. Relates Join Virtually
combines attributes from two tables into oneOne to One or Many to
One cardinality RelateDefines the relation between two tablesOne to
Many or Many to Many cardinality
Federal Emergency Management AgencyPage 5-#E190: Introduction to
ArcGIS 9.x for HAZUS-MH UsersJoining TablesIdentify the data that
are in common between two tables.Note that field names do NOT have
to be the same, but field types do.
Joining Tables (Contd.)
1. Complete the join data dialog and click OK.
3. Create thematic maps or perform other tasks as desired.
2. The tables will be virtually connected to one another.
Federal Emergency Management AgencyPage 5-#E190: Introduction to
ArcGIS 9.x for HAZUS-MH UsersRelating Tables Identify the relation
between the two tables you want to associate with one another.
Tables will be associated but will remain visually separate from
each other.Open related table.
Federal Emergency Management AgencyPage 5-#E190: Introduction to
ArcGIS 9.x for HAZUS-MH UsersField CalculatorThe Field Calculator
provides a powerful range of functions for manipulating attributes
for one record or for multiple records.
Federal Emergency Management AgencyPage 5-#E190: Introduction to
ArcGIS 9.x for HAZUS-MH UsersGraphs and Charts ArcGIS provides
sophisticated graphing and charting tools.
Federal Emergency Management AgencyPage 5-#E190: Introduction to
ArcGIS 9.x for HAZUS-MH UsersReviewWhat are some table options in
ArcMap?What is the difference between joining and relating
tables?
Federal Emergency Management AgencyPage 5-#E190: Introduction to
ArcGIS 9.x for HAZUS-MH UsersExerciseNavigating TablesJoining
TablesUsing the Field CalculatorCreating Graphs
Federal Emergency Management AgencyPage 5-#E190: Introduction to
ArcGIS 9.x for HAZUS-MH Users
