I would like to create a forms in my Access database which will save data to existing tables. This data entry form will save all valid data to the specified tables.
Now I would like to restrict the table from direct entry, i.e. no one can edit/update data directly in tables.
So please suggest me know can I do this.
You can not make something readonly AND not readonly. The forms need the tables to be writable.
What you can do is hide the tables, see: http://office.microsoft.com/en-gb/access-help/show-or-hide-database-objects-HP005188361.aspx.
If you need the tables for lookups you can make a readonly query based on the table. You have to change the query type to snapshot.
Related
Hi I would like to be able to update a view to point to a table in a different schema as in example below, change SCHEMA1 to SCHEMA2. No other change to the SQL.
Can anyone suggest an efficient way to achieve this, ideally a string replacement.
I can do CREATE OR REPLACE FORCE VIEW and provide the list of fields. This doesn't seem a good option as I have about 40 views re repoint.
CREATE OR REPLACE FORCE VIEW CUST.CustOrdersView as
SELECT field1, field2 etc.. from
SCHEMA1.CUSTOMER ;
Your problem is simply that you have hardcoded the schema name in the views' queries. Instead of that you could have created a synonym:
create synonym CUSTOMER for SCHEMA1.CUSTOMER;
Then in your view you would have simply referenced CUSTOMER.
To repoint the view to another schema you would have to change the synonyms:
create or replace synonym CUSTOMER for SCHEMA2.CUSTOMER;
That's still work but it's much easier to generate those statements from the data dictionary views than it is to change all the view queries.
(If there is a namespace clash - that is, if schema which owns the views already has an object called CUSTOMER - you would need to use a different name for the schema.)
You may not regard this as a helpful answer, because it doesn't really solve your current problem, but it may help you avoid a similar situation in the future.
Context:
I am creating a dashboard in Excel based on the data model I am building in Power Pivot. The source data in the data model is based on various other excel tables I am regularly receiving and copy-pasting into my workbook (their incoming structure is out of my control). My goal is to perform all data processing within Power Pivot/DAX rather than manipulating the data in the worksheets before loading into the model.
Problem:
In my model, I have a table (tabCases) which includes status updates on all cases from a management system. This table has a column named case-ID (not unique). I need to create a lookup-table with unique case-id's where I can create new columns with various KPIs for each case.
How can I do this in Power Pivot?
I found two suggestions in this article but none of them work for me (opt. 1 because it requires a manual creation of the unique ID list and opt. 2 because I don't have a database access).
In my mind there should be something really simple I could do, such as i.e.:
Add new table to data model
Set first column to be equal to DISTINCT(tabCases[caseID])
Is there such a way?
A Linkback Table might help you. Please see the link below:
https://www.sqlbi.com/articles/linkback-tables-in-powerpivot-for-excel-2013/
Thanks
I am using typed datasets to retrieve and manipulate data. To generate a typed dataset I use the built-in dataset designer and drag-drop tables from data sources. In addition, mostly I need to add custom columns to my data tables.
The problem is that when I make a change in the underlying database schema I simply delete and regenerate the data table and loose all the custom columns that I added earlier. So everytime I regenerate a data table I had to add these custom columns again and again.
So my question is that if there is an easy way to mantain or keep track of these custom columns?
Don't delete the DataTable and regenerate it. Instead right-click, choose configure and adjust the query to add/remove your new columns. Then click finish and the table will be updated in the DataSet but without deleting your customisations.
I have a View in an SQL Server Database, which involves many different tables. I am using Linq to Entities to access the database, so I have no problem getting and showing view's result.
But the problem is when I want to modify some field in those results. As long as a view doesn't have a primary key, the Entity is read-only, so the question is:
Is there any way to modify the object with the view's data and save those changes in the corresponding tables?
Sorry for my english, but it's not my native language.
Thank you very much in advance!
There are some requirements for VIEW to be updatable. Take a look here. You say your view references many tables, so you have to implement INSTEAD OF trigger.
Can I create a form in APEX which creates/updates records in multiple tables? For example two tables with a one-to-one relationship.
If you are using Automated Row Fetch mechanism, you can use two different ARF for two tables. If you want to have more control, you can define your INSERT/UPDATE statements yourself usign Page Processes.
A simple way would be to create a view that returns the joined tables and base the Apex form on that. You may need to add INSTEAD OF triggers to the view to be able to insert and update successfully.