interview questions on data modelling using erwin

INTERVIEW QUESTIONS ON DATA MODELLING USING ERWIN PROFESSIONAL

List the steps in sequence and provide short descriptions for each of them.Įxample answer: 'The first step is to gather business requirements and conduct a feasibility test. This question evaluates your knowledge and understanding of the data modelling development cycle. Describe the different phases of a data modelling development cycle. Related: 14 Data Modelling Tools For Data Analysis (With Features) 2. The relationship between the member table and book table is a one-to-many relationship where one person can take multiple books and one book is available for loan to multiple people.'

This system's database can have a member table which contains a list of people enrolled in the library, a book table that lists all the books available and a lending table that includes details on who loaned what book. The final step is to set up a database to store aggregated data from multiple sources.įor example, consider a simple library management system to lend books. The next step is to define the structure of this data using various data models, such as the ER model, hierarchical model and network model. The first step in data modelling is to create a blueprint of the business data, which contains the overall structure of the data and its description. Modellers can use this technique to design new databases or modify existing ones. Define data modelling and provide an example in your answer.Įxample answer: 'The purpose of data modelling is to present a high-level overview of business data using various visualisation techniques. Interviewers may ask this question to assess your basic understanding of data modelling. Here are some examples of responses you can use as a guide: 1.

INTERVIEW QUESTIONS ON DATA MODELLING USING ERWIN PROFESSIONAL

Interviewers use these questions to evaluate your understanding of concepts, professional background and experience. View more jobs on Indeed View More Data Modelling Interview Questions With Example Answersĭata modelling interview questions may include a mix of general and technical questions that help interviewers assess if you are a suitable candidate for the role.

Interview questions on data modelling using erwin