View Database
This page allows LDAS users to obtain a graphical view of the numeric data
inserted into a database table within a specified time. Only columns with
numeric values can be selected.

View Database filters
- Select a database among the list.
- Select a table among the list.
- Select a time field among the list. Currently only insertion time
is allowed.
- Select a column among the list. The list consists of columns with
numeric data only.
- Specify the time ranges: one easy way is to select one of the time
options: last minute, last hour, last day to get some
time in the entry fields and then modify the times to your desire range.
- If you need to edit the resultant SQL, hit EDIT
and enter your changes in text column. Your changes will be appended
to the current SQL text. If you enter invalid text, the
SQL may result in errors.

- Submit request to server by hitting the SUBMIT button.
Response:
The request is submitted as an LDAS getMetaData job request. Since the getMetaData
has a limit on the number of rows that can be retrieved at one time,
multiple requests will be automatically submitted to accumulate all
the data for the entire time period and then returned to cmonClient. If you need to abort the request,
select a request from the list and hit ABORT REQUEST. Your request
will be aborted when the getMetaData job has completed instead
of continuing with more request for the time period. Note that
No partial results are returned from an abort..
Data Display
- When all the data is retrieved from the database, a graph window popups up with
the value of the column vs time of insertion in GPS.

- For histogram chart, hit Y-axis Histogram button on the right side
of the graph.

- You can adjust the bin size, turn on log scale or view cumulative statistics
like with other histograms.
