In this lesson you will learn how to look at database models and external database links. We'll also try performing some searches using the Query by Example. In the second part of the lesson we'll look at the Query Builder. Some examples of this type of information are genes and molecular markers. By looking at examples from several databases, you should get an idea of the different nomenclature and structures that are being used.
Every database located here is different in both content and organization.
The underlying structure of the database, for example, what fields are used to describe a locus, is defined by its model. The models can be very useful if you're having trouble locating certain information, or if you are consistently getting no hits on your queries. The database below has examples that illustrate how to look at database models. If you have a AlfaGenes Database comment or question contact either Daniel Z. Skinner or Paul C. St. Amand , Curators. Molecular markers On most of the genetic maps in these databases, the majority of the points consist of anonymous molecular markers and not genes of known function.