erwin data modelling interview questions and answers

txt.ħ.Data models can be opened and saved in several different file types like. Modelmart : Many users can work with a same data model concurrently.ġ.Logical, Physical and dimensional data models can be created.Ģ.Data Models can be created from existing systems(rdbms, dbms, files etc.).ģ.Different versions of a data model can be compared.Ĥ.Data model and database can be compared.ĥ.SQl scripts can be generated to create databases from data model.Ħ.Reports can be generated in different file formats like.Physical: In this view, data model represents physical structures like tables, columns, datatypes etc.Logical: In this view, data model represents business requirements like entities, attributes etc.Computer Associates delivers several softwares for enterprise management, storage management solutions, security solutions, application life cycle management, data management and business intelligence.Įrwin makes database creation very simple by generating the DDL(sql) scripts from a data model by using its Forward Engineering technique or Erwin can be used to create data models from the existing database by using its Reverse Engineering technique.Įrwin workplace consists of the following main areas: All Fusion Erwin Data Modeler commonly known as Erwin, is a powerful and leading data modeling tool from Computer Associates.

Erwin data modelling interview questions and answers