Microsoft Access Database Interview Preparation Guide

Size limitation does not pertain to number of records in a table within a database. Forms, reports, macros, and modules also contribute to database size, but is rather minimal compared to tables containing records. It is recommended that if large amounts of data will be maintained or constantly deleted and new data imported, put your tables in another database and link the tables back into the main database. The utilities for database compression and repair will run much more quickly. In Access 2.0 databases the byte size limitation is 1 gigabyte. In general, use the 1gb rule and suggestions here to maintain performance of the database. See also "How Replication Increases Size of Database.".

Whenever a developer is signing into the code project you will have three options they are disable the macro, enable the macro and explicitly trusting the publisher. You can trust the publisher by allowing from the control panel of the windows. Always have an option left to enable or disable the macros because sensitive information regarding your code can be leaked out within fraction of seconds.

This can be accomplished by creating a form with customized buttons that point to macros. An easier way is to use MS Access' built in function called "Switchboard Manager". This can be located in Tools/Add-Ins.

Data can be managed by using the features of Import text wizard and export text wizard. Here you can save the operation for future use. First you should edit the specification name after clicking it you can make changes to the text box. Path can also be changed by clicking and modifying the changes in text box. Changes to the description of the file name can be made by making a change in the text box and then saving the changes to the path, specification name by pressing enter.

Some developers occasionally rely on indexes to sort their data, but shouldn't. That's because an index is an internal Jet operation that relies on internal rules to speed sorting, which is not the same as actually performing the sort. Records are not stored differently or changed. The sort is not performed until an action is being taken against the data like a query. This is not the same as simply opening a table in its Datasheet View. Although an index often appears to sort data, those internal rules often conflict with normal sorting practices and can have unexpected results. Sorting can be accomplished through the use of a query where ascending or descending can be specified against any one of the fields chosen from the table.

The process of importing data from another Access database follows these general steps they are.
► Preparing the document for import operation and make sure that extensions are not in .mde or .accde because in that extension you can import only tables.
► Source should be closed automatically when the process is completed
► Make sure that you have permission for read and write.

The Switchboard manager in MS Access offers only limited information on errors that occur within the database. Execute the selection directly from the database window to get more detailed information on the error.

The import operation present in MS Access does not overwrite or modify any of the existing tables or objects. If both the source and destination are the same it makes sure that numbers are appended to the name of the source file. For example a table having a name as info will be renamed as info1.

MS Access is not backwards compatible. To share tables between different versions of MS Access, you can link the tables between two different databases. However, only the tables in the converted database would be available.

1 Gigabyte