Data Access User Manual > Rogue Wave Views Data Access Gadgets > Data Source Gadgets Reference > IliSQLDataSource > Dialog Boxes
 
Dialog Boxes
Various elements in the SQL Data Source inspector panel can call different dialog boxes:
*SQL Data Source Properties Dialog Box
*Connect Dialog Box
*Source Dialog Box
*Select Tables Dialog Box
*Question Dialog Box
*Differences Dialog Box
SQL Data Source Properties Dialog Box
The SQL Data Source Properties dialog box is used for defining various properties of the data source. It is called by the Properties... menu item in the File menu of the SQL Data Source inspector panel.
Label
Description
Read only
Menu: Yes, No.
Default: No.
Explanation:
Yes = The data source cannot be edited.
No = The data source can be edited.
Distinct
Menu: Yes, No.
Default: No.
Explanation:
Yes = Duplicate rows are merged.
No = Duplicate rows are left intact.
Updatable tables
Menu: List of tables in FROM section.
Default: First table that has been added to the
data source.
Explanation: The table that the data source updates.
A data source can only update one table.
Concurr. control
(concurrency control)
Menu: On, Off.
Default: Off.
Explanation:
On = The data source takes extra steps to ensure
that a row has not been updated by another user from
the time the row was retrieved from the database and
when it was resubmitted to the database.
Off = The data source does not take such extra steps.
Fetch policy
Menu: As Needed, Immediate.
Default: As Needed.
Explanation:
As Needed = Selected data is retrieved from the
database and stored in data cache only as data is needed.
For As Needed to be effective, Auto Commit (see below)
must be No. When Auto Commit is Yes,
Immediate is implied.
Immediate = All selected data is retrieved at once
and stored in data cache.
Auto commit
Menu: Yes, No.
Default: Yes.
Explanation:
Yes = After each operation, a COMMIT command
is automatically sent to the database.
No = COMMIT command is not sent to database,
and must be done by other means
(for example, programming).
Auto refresh
Menu: Yes, No.
Default: No.
Explanation:
Yes = Each time a row is inserted or updated,
it is sent to the database and retrieved for verification
in the data source.
No = Row is not retrieved.
Auto select
Menu: Yes, No.
Default: No.
Explanation:
Yes = Data source recomputes its data by submitting
a query to the database each time a foreign data source,
to which the data source is connected by parameters,
changes.
No = Data source does not recompute its data.
Insert nulls
Menu: Yes, No.
Default: Yes.
Explanation:
Yes = Null columns are inserted in the database table
when a row is inserted. Database schema default values
are not taken into account since a null value is
explicitly specified, but performance may be increased.
No = Null columns are not inserted.
Dynamic SQL
Menu: Yes, No.
Default: Yes.
Explanation:
Yes = When a row is updated in the database,
only those values of columns in remote tables
whose values have changed in current table are set.
No = All values of columns in remote tables are set.
Use bound vars
Menu: Yes, No.
Default: Yes.
Explanation:
Yes = When column values are sent to the database,
are packaged in bound variables of the native database
call interface, instead of being part of the SQL statements.
When combined with Dynamic SQL = No
and Insert Nulls = Yes, can greatly increase performance.
No = Column values are not packaged in bound variables.
Rows count limit
Menu: None.
Default: No default.
Explanation: Maximum number of rows that can be retrieved.
If empty, unlimited number of rows can be retrieved.
Connection
Menu: None. Click button to open the Connect dialog box.
Default: No default.
Explanation: Specifies the SQL session by which the
data source will communicate with the database.
Query conjunct
Menu: None.
Default: No default.
Explanation: Additional SQL selection criteria that
will be added to criteria in Where and/or Having rows.
Transaction
manager
Menu: List of available transaction managers.
Default: No default.
Explanation: Name of the transaction manager used
by this data source.
Use property
manager
Menu: Yes, No.
Default: Yes.
Explanation:
Yes = The data source uses a property manager.
No = The data source does not use a property manager.
Connect Dialog Box
The Connect dialog box is used for connecting the data source to a database, that is, for establishing an SQL session. It is called by the following menu items in the SQL Data Source inspector panel when the data source is not connected to a database:
*Properties... —> Connection button in the SQL Data Source Properties panel that appears. See Properties... menu item and Connection field.
*View Source... menu item in the File menu. See View Source... menu item.
*Add Tables... menu item in the Query menu. See Add Tables... menu item.
The Connect dialog box that appears depends on the type of DBMS being used. Below is a Connect dialog box for an odbc DBMS.
Element
Description
Name field
The name of the SQL session or (Custom). If (Custom),
must fill in other fields to create a new SQL session.
User field
The system database user name.
Password field
The user password.
Database field
The name of the database.
Options field
The data necessary to connect to the database.
Keep Password checkbox
When not checked, forces the user to enter a password
each time a connection to the database is requested.
OK button
Validates the entries and creates an SQL session having
the name entered in the Name field.
Cancel button
Closes the Connect dialog box without validating
the entries. No SQL session is created.
Source Dialog Box
The Source dialog box is used for reading the SQL statements automatically created by the user’s screen operations. The Source dialog box is called by the View Source... menu item of the File menu in the SQL Data Source inspector panel if the data source is connected to a database. If not already connected to a database, this menu item calls the Connect dialog box . After connecting to the database through the Connect dialog box, the Source dialog box then appears.
The Source dialog box shows the SQL statements corresponding to the current data source. It is read-only.
Button
Description
Close
Closes the Source dialog box.
Select Tables Dialog Box
The Select Tables dialog box is used for selecting tables to be added to the data source from the currently connected database. A representation of the table is placed in the FROM section of the SQL Data Source inspector panel. See the picture of the IliSQLDataSource Inspector Panel.
The Select Tables dialog box is called by the Add Tables... menu item of the Query menu in the SQL Data Source inspector panel (if the data source is connected to a database). If not already connected to a database, this menu item calls the Connect dialog box. After connecting to the database through the Connect dialog box, the Select Tables dialog box then appears.
The Select Tables dialog box consists of:
*A list on the left side of the box containing all the tables owned by the selected user.
*A list on the right side of the box, initially empty, to which the end user can add tables.
*Two buttons for moving selected database tables:
*-> Adds the table selected in the left list to the right list.
*<- Removes the selected table from the right list.
Note: To display the columns of a table in the left list, double-click on its name or on the '+' to the left of its name.
Button
Description
OK
Adds the selected database tables to the
data source.
Cancel
Closes the Select Table dialog box without adding
any table to the data source.
Question Dialog Box
The Question dialog box is used for confirming a command by the user. It is called by the following menu items of the Query menu in the SQL Data Source inspector panel when an item corresponding to the command is selected in the panel:
*Remove Table... See Remove Table... menu item.
*Delete Column... See Delete Column... menu item.
*Delete Join... See Delete Join... menu item.
The Question dialog box allows you to confirm one of the above three commands.
Button
Description
OK
Deletes the selected item.
Cancel
Closes the Question dialog box and no item
is deleted.
Differences Dialog Box
This dialog box is used to show the differences between the data source tables and the database tables—in the event that a table has been modified in the database by another user. When you synchronize a data source with a table (or all tables) the structural information in the FROM data source table changes. (These operations are on the Query menu. If there are differences between the tables, the above window is displayed.) To update the table(s) in the FROM section press Validate. To update the table(s) in the SELECT section as well, check the Update data source columns box and Validate.
Column
Description
State
Indicates whether something has been added to,
removed from, or changed in the database.
Table
Shows the table name being synchronized.
Column
Shows the column being synchronized.
Attributes
The four possible types are: Max length, PartofKey,
Datatype, Nullable.
Version 6.3
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