I'm implementing my first Access Database. I've read numerous guides/manuals, and I believe I'm nearly at the finish line. The Access Database will be used by 3-4 users.
I have three tables, all of which are "live" connections to three different Excel file. These Excel files are on a shared drive, which are to be updated periodically by the different users.
I have a single query that uses each of the different tables (3).
The goal is to give the users the ability to view the output of the query. From my understanding, the best way to structure Access is to split the database. I'd like the three tables to be stored in the "Back-End" database, and the Query to be on the "Front-End" database.
The issue that I'm running into is that, when using the "Database Splitter", I'm given the error "There are no tables in this database. The back-end database will be empty". I've searched for the past couple hours, but I can't seem to find a reason for this error. I believe it is quite clear that I do indeed have tables. What am I missing? Any input/suggestions are greatly appreciated!
The "Database Splitter" can be used when you have tables and front-end things in your database. The "Splitter" would then create an additional Access database, "move" the tables to the new database and create linked tables in the old database that map the the tables in the new database. You already have linked tables, so there's nothing to split (your linked tables are not even Access tables).
Related
I have a database wordpress consisting a lot of tables. I am looking for a certain entry 20.22.31.44. What is the best way to return the table and column if this entry exists?
You can dump your database data (SQLDump) into a file and search through it's content.
You may also use a Database Management system (i.e. Workbench, PHPMyAdmin) to perform that global search for you. See related.
I have three identical tables, one on MySQL, one linked to this one on Access by ODBC, and a native in the same Access database.
When I update the table on MySQL, the linked table on Access updates, and vice versa. But I would like to know if it is possible that the linked table updates the native table (and vice versa)?
Access table
MySQL table
It really depends on how the local Access table is being updated. If it is ALWAYS updated say by a few forms, then you could add a after update even to those few forms, and put in code to update the MySQL table.
Another approch (again you only/always update the local tables) is to add a table trigger to the local table. In this table code event, you can actually have it call some VBA code, and that VBA code could then update/insert to the linked MySQL table. Once again, then the two tables will automatic remain in sync.
The other possible would be to add a time + date stamp column to the tables (both on MySQL side, and on the Access side). You could then write some VBA code to sync up the tables. Such code is not too hard, but in a multi-user setting, this can become quite a challenge, since while you are syncing the data, other users might also update the MySQL tables and thus your sync routines might well miss some tables. Database sync software and this subject can fill a few books the size of medical texts, and is a VERY complex subject.
However, why not just always use linked tables to MySQL, and be done with any requirements to sync data? Access makes a great client to SQL server or MySQL. If you eliminate the local tables, then you eliminate the need to sync your data.
I have two Database for example "Database1" another is "Database2" whose location at 'Libraries\Documents' at my pc. Now I want to select one column named it "Column3" where another column "ID" of Database1 equal to Database2. So how can I write this query? And also how can I get those data from different database and same or different location of database? please explain with query example. I found it only for SQL but not for Access database 2013.
Thanks in advance.
Did you try link tables from 2nd file into 1st file?
From one Access DB file you can link tables from various data sources, including all kinds of other databases or excel, csv, xml files, and then you can treat them as "linked table",
for all the local tables and linked tables you can easily join them and build up queries.
It is one of the many handy features that i like to use MS Access for quick and easy tasks.
Hope this helps.
I am attempting to "sync" data from a read-only ODBC MySQL server to Access 2016. I need to move the data into Access so that I can more easily manipulate and create better customized reports.
I have linked the data tables between Access and MySQL, however I cannot get the data in these tables to automatically refresh. I must go into Access and hit "Refresh All".
What I'm looking to do is update all of my open tables in Access once nightly so that each morning the data used to build these reports is new. Currently if I leave these tables all evening, when I get in the next morning I must hit "Refresh-All" for Access to go retrieve the most recent data.
Any ideas?
The data in linked tables is automatically refreshed by access when you attempt to read them. You can do that by displaying a datasheet view of the database, or by a form where the linked table is the data source. Beware, we have had problems which tables with lots of records being the source for drop down lists, having the database locked.
Access only does this properly (and at speed) if either the underlying table has a unique clustered index, or after having linked the tables you create an index in access.
If you want to create a copy that you can manipulate (such as write to) and the underlying tables are read only, then you will have to create matching unlinked tables and execute some form of copy sql and appropriate points in your application.
Am trying to import some selective data and create a table in MS Access db 2002 from a linked table. For some odd reason the performance became really bad all of a sudden when importing the data.
I tried googleing and tried various methods like reparing/compacting the db, Changing the SubDataSheet Name to [None] from [Auto] but either one worked.
Can any one please give me some examples to increase the performance of linked tables.
Thank you.
Rather than selecting information from a linked table and trying to make a local table, when using a database server like MS MSQL, you would be better to create a "Pass Through Query" to do the select work on the server side, and then carry out a simple select * on this pass through to get your data in to a local table. This will give the best results if your first select statement is complex and takes a while for Access to run on a linked table, if that is not the issue then you will need to look at your network speed which connects you to your MS SQL server.