Readonly command




Sets the current connection to a "read-only" connection, as if the current user were defined as a readOnlyAccess user. (For more information about database authorization, see the Java DB Developer's Guide.)


ij> connect 'jdbc:derby:menuDB';
ij> readonly on;
ij> SELECT * FROM menu;
COURSE    |ITEM                |PRICE
entree    |lamb chop           |14
dessert   |creme brulee        |6
appetizer |baby greens         |7
entree    |lamb chop           |14
entree    |lamb chop           |14
dessert   |creme brulee        |6
6 rows selected
ij> UPDATE menu set price = 3;
ERROR 25502: An SQL data change is not permitted for a read-only
connection, user or database.
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