oracle sql developer edit fields

I have recently tried oracle sql developer 2.11 and 3 EA 2 both 32-bit windows 开发者_如何学JAVA(although I have tried 2.11 64bit as well). One issue that has been driving me nuts is in data view I cant seem to edit the data in fields, from a MYSQL, database directly, however, I can manipulate data via SQL so it isn't a permissions problem.

Can anyone please tell me how to enable it so I can click on fields and edit, I am sure this is possible from looking at video on youtube, however, these demos are with oracle so I wonder if this is a restriction with mysql? Anyone?

PS Also have the same issue with MS Access Database.

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I think its a restriction.

Oracle tables have a built-in identifier called ROWID that is unique to any record in a table. As such, the data browser can pull out the ROWID for each row it is displaying. When you change column 'pet' from 'CAT' to 'DOG' it simply generates an UPDATE table SET PET='DOG' WHERE ROWID = ....

There are a few issues with this (eg tables with fine grained access control/row level security) so it doesn't always work even for Oracle tables.

Technically the equivalent can be done by determining the primary key columns, but that would require the table has a primary key enforced, so excluding updatable views. And then there is the hassle of determing which columns are the primary key ones and using those values (data types etc). In short, it is a lot of extra work under the hood, all database specific, so I'm not surprised that functionality hasn't been developed.