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I am working with a department form that has a subform with the employees of each department. There is a property in the subform called "Show Header and Footer" with two options, YES/NO. I have set the subform to Form view to see how this property affects it. I have inserted a title in the...

I understand that this property allows you to choose whether manually written options that are outside the origin of the list are shown in a combo box dropdown or a list box. Here's an example: Field Products with values "car," "boat," "motorcycle." The combo box displays these three options. If...

Hi. In all my questions you recomendme the 1:1 relationships are bad idea because in the real world dont exist or the implementation are very complicated. Now i am studying eer new types. Superidentities with subidenties. In ER the model would be this. This model is account bank types from...

The empleoyees can working on only 1 project. But several empleoyees not work any project. The projects have one or more workers. Hi. I wanted listen opinions about this model. 1º Question. Its better put the atributes worker's rol and begining date on the project, on the relationship or on the...

I have doubts about what happens when adding attributes to a 1:N or 1:1 relationship. I understand that if I add attributes, in the relational model, this relationship would be treated as if it were an N:M relationship, creating a table for this purpose. For example, in a 1:1 relationship...

Hi "Within the EER model, I need to understand the difference to Kknow an identifying relationship. Could you provide me with an example that I can extrapolate to others? Thank you."