To do this we list the rows of the entity table and create this part in accordance to the content of the rows. In addition to the name of each output or analysis we write the index of each entity in the columns of the entity table which required this output or analysis. The second step creates the second part of the application model using the information collected in the activity table about the internal entities. This part of the model consists of one or more submodels. Each submodel represents a certain business process or activity.
Every activity has a number of tasks, and each task is performed by one or more jobs.
In addition to the name of each task or job we write the index of each entity in the columns of the activity table which performed it. The last phase of TAD deals with the implementation of the system developed in the previous phases. The first step of the implementation deals with writing algorithms for realizing the operations of every class defined in the object model. The second step defines the algorithms which represent the content of the application model. These algorithms must implement the users data access corresponding to the information represented in the application model and represented by the index value of each entity which has the right to use an algorithm.