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jvx:reference [2020/06/10 13:12]
cduncan [Notes on the launcher]
jvx:reference [2020/06/10 13:16]
cduncan [MetaData]
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 ===== What is it? ===== ===== What is it? =====
  
-DataBooks are an active model, which allow you to directly query and manipulate the data. Contrary to many other systems [[https://​sourceforge.net/​projects/​jvx/​|JVx]] does not map the data into objects, but instead ​allows you to directly access it in a table like fashionexposing columns, rows and values.+DataBooks are an active model, which allow you to directly query and manipulate the data. Contrary to many other systems[[https://​sourceforge.net/​projects/​jvx/​|JVx]] does not map the data into objects, but allows you to directly access it in a table-like fashion exposing columns, rowsand values.
  
-One could say that it is like a three dimensional arraywith these dimensions:+One could say that it is like a three dimensional array with these dimensions:
  
   * DataPages   * DataPages
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   * Columns/​Values   * Columns/​Values
  
-With DataPages containing DataRows, which itself ​contain the values and everything ​is referencing the RowDefinition,​ which outlines how a row looks like.+with DataPages containing DataRows, which in turn contain the values and everything referencing the RowDefinition,​ which further ​outlines how a row looks like.
  
 {{:​jvx:​reference:​databook.png?​nolink|DataBook Architecture,​ the DataBook contains DataPages, which contain DataRows.}} {{:​jvx:​reference:​databook.png?​nolink|DataBook Architecture,​ the DataBook contains DataPages, which contain DataRows.}}
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 dataBook.setRowDefinition(rowDefinition);​ dataBook.setRowDefinition(rowDefinition);​
 </​code>​ </​code>​
-==== ColumnDefinition ​====+==== Column Definition ​====
  
-The ColumnDefinition ​defines and provides all necessary information about the column, like its DataType, its size and if it is nullable or not. You can think of it as one column in a table.+The column definition ​defines and provides all necessary information about the column, like its  ​datatype, its sizeand whether ​it is nullable or not. You can think of it as one column in a table.
  
 <code java> <code java>
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 columnDefinition.setNullable(false);​ columnDefinition.setNullable(false);​
 </​code>​ </​code>​
-==== MetaData ​====+==== Metadata ​====
  
-Most of the ColumnDefinition ​is additional information about the column, like if it is nullable, the label of the column, default values, allowed values and similar information.+Most of the column definition ​is additional information about the column, like if it is nullable, the label of the column, default values, allowed valuesand similar information.
  
 ==== DataType ==== ==== DataType ====
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