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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

Add a user role to a group role

There are two types of roles: user roles and group roles. By assigning a user role to a group role, a database administrator can add complicated levels of access to their databases with one simple command.

For your startup, your search for data scientist hires is taking longer than expected. Fortunately, it turns out that Marta, your recent hire, has previous data science experience and she's willing to chip in the interim. In this exercise, you'll add Marta's user role to the data scientist group role. You'll then remove her after you complete your hiring process.

Instructions

100 XP
  • Add Marta's user role to the data scientist group role.
  • Celebrate! You hired multiple data scientists.
  • Remove Marta's user role from the data scientist group role.