Information Technology Reference
In-Depth Information
Number of columns
Names of columns
Number of rows
Value in cell at any row, column
General
Table
Time series
Science data
table
Number of columns
Names of columns
Number of rows
Value in cell at any row, column
Time corresponding to any row
Number of columns
Names of columns
Number of rows
Value in cell at any row, column
Type of column value
Column “metadata”
Table “metadata”
Fig. 7.17 Tabl e hi erarchy
Tables can be viewed as columns of information - each column has the same
type - as illustrated in Fig. 7.18 which comes from the Starlink Tables Infrastructure
Library (STIL) table interface. This is rather rich in functionality and which is
itself built on top of the Java TableModel [ 71 ] interface. The latter has a core set
of methods, namely
get the number of columns (getColumnCount)
get the column names (getColumnName)
get the number of rows (getRowCount)
get the value at a particular cell (getValueAt)
Fig. 7.18 Example Table
interface
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