Enabled for linked components such as linked drawings or linked tables and queries so that the linked component or query can be refreshed from the originating table. When the geocoded table controlling a linked drawing changes, the linked drawing will not be updated automatically within an interactive session of Manifold. Instead, the Refresh Data command must be issued.
When linked components are used in a Manifold IMS session we can set the Refresh linked components… parameter to some automatic interval, so Refresh Data is not necessary in IMS work.
Invoking the View - Refresh Data command on a query will cause cascaded refreshes within all dependent queries and linked tables.
Example 1
We have a linked table T and a query Q that selects some data from T. We run Q and it displays the resulting data.
We then you go to some other program and modify T outside of Manifold. Re-computing Q with View - Refresh Data will now first refresh T and will then recompute Q on the updated data in T.
Example 2
We have a native table T, a query S that selects some data from T and a query Q that selects some data from S. We run Q (in turn running S) and it displays the resulting data.
We then modify T so S returns a different set of records. Re-computing Q with View - Refresh Data will first re-compute S and then re-compute Q on updated data from S.