Not splitting your database into front-end and back-end: In Access, it’s important to split your database into a front-end and a back-end. The front-end contains the user interface and forms, while the back-end contains the tables and data. This helps to improve the performance and security of your database.
Not using primary keys: Every table in an Access database should have a primary key, which is a unique identifier for each record. Without a primary key, it can be difficult to link tables together or update records accurately.
Not using table relationships: Access allows you to create relationships between tables, which helps to ensure that your data is consistent and accurate. Not using table relationships can result in data inconsistencies and errors.
Not using input validation: It’s important to validate the data that users enter into your Access forms, to ensure that it is accurate and consistent. For example, you can use input masks and validation rules to ensure that dates are entered in the correct format, or that numeric values are within a certain range.
Not using VBA: Access has a powerful programming language called Visual Basic for Applications (VBA), which allows you to automate tasks and create custom user interfaces. Not using VBA can limit the capabilities of your Access database and make it more difficult to perform advanced tasks.