IDataTableSchema

```
public interface IDataTableSchema
```
A DataTableSchema describes the sctucture of a DataTable

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`int`	`getColumnCount()` Returns the number of columns a row contains.
`int`	`getColumnIndex(String columnName)` Returns the index of a columnName.
`IDataColumnSchema`	`getColumnSchema(int columnIndex)` Returns the schema of the column with the specified index.
`IDataColumnSchema`	`getColumnSchema(String columnName)` Returns the schema of the column with the specified name.
`List<? extends IDataColumnSchema>`	`getColumnSchemas()` Returns the schemas of all columns.
`String`	`getName()` Returns the name of the entity of the data in the datatable.
`IDataColumnSchema`	`getPrimaryKey()` Only for internal use.
`boolean`	`hasColumn(String columnName)` Returns whether the column name is defined in the schema or not.

- Method Detail
  - hasColumn
```
boolean hasColumn(String columnName)
```
    Returns whether the column name is defined in the schema or not.
    
    Parameters:
    
    columnName -
    
    Returns:
    
    true if and only if the column name is defined in the schema
  - getColumnCount
```
int getColumnCount()
```
    Returns the number of columns a row contains.
    
    Returns:
    
    number of columns a row contains
  - getPrimaryKey
```
IDataColumnSchema getPrimaryKey()
```
    Only for internal use.
  - getColumnIndex
```
int getColumnIndex(String columnName)
```
    Returns the index of a columnName.
    
    Parameters:
    
    columnName -
    
    Returns:
    
    the index of a columnName.
    
    Throws:
    
    ConnectionBusException - if the columnName does not exist
  - getName
```
String getName()
```
    Returns the name of the entity of the data in the datatable. However, specific rows can belong to a derived entity.
    
    Returns:
    
    returns the name of the entity.
  - getColumnSchema
```
IDataColumnSchema getColumnSchema(int columnIndex)
```
    Returns the schema of the column with the specified index.
    
    Parameters:
    
    columnIndex - the index the column
    
    Returns:
    
    the schema of the column
  - getColumnSchema
```
IDataColumnSchema getColumnSchema(String columnName)
```
    Returns the schema of the column with the specified name.
    
    Parameters:
    
    columnName - the name the column
    
    Returns:
    
    the schema of the column
  - getColumnSchemas
```
List<? extends IDataColumnSchema> getColumnSchemas()
```
    Returns the schemas of all columns.
    
    Returns:
    
    the schemas of all columns

Interface IDataTableSchema

Method Summary

Method Detail

hasColumn

getColumnCount

getPrimaryKey

getColumnIndex

getName

getColumnSchema

getColumnSchema

getColumnSchemas