SchemaDefinition 
    class SchemaDefinition
Describes the schema of the table.
Types
Properties
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                  The regular columns of the table.
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                  The columns that are part of the clustering key of the table.
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                  The columns that are part of the partition key of the table .
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                  The columns that have been defined as STATIC. Static columns store values that are shared by all rows in the same partition.