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  3. Database Design
  • 1

    Processing, Storing, and Organizing Data

    Free

    Start your journey into database design by learning about the two approaches to data processing, OLTP and OLAP. In this first chapter, you'll also get familiar with the different forms data can be stored in and learn the basics of data modeling.

  • 2

    Database Schemas and Normalization

    In this chapter, you will take your data modeling skills to the next level. You'll learn to implement star and snowflake schemas, recognize the importance of normalization and see how to normalize databases to different extents.

  • 3

    Database Views

    Get ready to work with views! In this chapter, you will learn how to create and query views. On top of that, you'll master more advanced capabilities to manage them and end by identifying the difference between materialized and non-materialized views.

  • 4

    Database Management

    This final chapter ends with some database management-related topics. You will learn how to grant database access based on user roles, how to partition tables into smaller pieces, what to keep in mind when integrating data, and which DBMS fits your business needs best.

Initializing

Exercise

Granting and revoking access

Access control is a key aspect of database management. Not all database users have the same needs and goals, from analysts, clerks, data scientists, to data engineers. As a general rule of thumb, write access should never be the default and only be given when necessary.

In the case of our Pitchfork reviews, we don't want all database users to be able to write into the long_reviews view. Instead, the editor should be the only user able to edit this view.

Instructions

100 XP
  • Revoke all database users' update and insert privileges on the long_reviews view.
  • Grant the editor user update and insert privileges on the long_reviews view.