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Description  Columns  Primary key  Check constraints  Foreign keys  Unique keys  Indexes  Options  Referenced by  Triggers  

COUNTRIES

Description

country dimension table (snowflake)

Columns

Column Datatype Nullable Default value Comment
COUNTRY_ID CHAR(2) N   primary key
COUNTRY_NAME VARCHAR2(40) N   country name
COUNTRY_SUBREGION VARCHAR2(30) Y   e.g. Western Europe, to allow hierarchies
COUNTRY_REGION VARCHAR2(20) Y   e.g. Europe, Asia
COUNTRY_TOTAL VARCHAR2(11) Y 'World total'  

Primary key

Primary key Columns
COUNTRY_PK COUNTRY_ID

Check constraints

Check constraint Check condition
COUNTRY_COUNTRY_NAME_NN "COUNTRY_NAME" IS NOT NULL

Indexes

Index Type Uniqueness Columns
COUNTRY_PK NORMAL UNIQUE COUNTRY_ID

Options

Option Setting
Clustered N
Generated by Oracle N
Index Organized N
Logging Y
Partitioned N
Temporary N
Nested N

Referenced by

Referenced by Constraint
CUSTOMERS CUSTOMERS_COUNTRY_FK


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