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✏️ To Do List and Project Rebuild

Goal: Practice writing SQL statements and adding CR functionality to applications. Take the time to understand how a database query works in a .NET application.

Warm Up​

  • What's the difference between a database row and a database column?
  • What's a primary key? What's it used for?
  • What's the difference between MySQL and MySQL Workbench?
  • When would we use MySqlCommand's ExecuteReader() method and when would we use ExecuteNonQuery()?
  • What are parameter placeholders and why do we need to include them in our queries?
  • Why should we close a database connection after we've made a query?

Code​

SQL Practice​

Let's practice using SQL statements. Make sure that both you and your pair get a chance to practice all of these statements. Reference the weekend homework as necessary:

  • Create MySQL tables to hold the following data: contacts, phone numbers, and email addresses.
  • Add several columns to these tables such as whether it's a home, work or mobile number, first and last name, and so on.
  • Drop one of the columns.
  • Insert information of a few contacts into your tables.
  • Try several SELECT queries on the tables you've created.
  • Run some selects with different operators (such as WHERE and LIKE) on your tables.
  • Update some of the data in your tables.
  • Delete some records.
  • Drop the tables you made.
  • Use at least three queries of your choice not already used in the exercises above on your data.

To Do List​

Follow along with the To Do List lessons from this weekend to build a fully-functioning To Do List with create and read functionality.

Project Rebuild​

Choose a project from the last course section and refactor it to use databases.

Peer Code Review​

  • Does the application successfully retrieve and display data from the database?
  • Do MVC routes follow RESTful convention?
  • Have all of the standards from previous sections been met?
  • Does the project demonstrate an understanding of this section's concepts thus far?
  • Does the application work as expected?