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# B2 Intermission Work

Answer these Check for Understanding questions as you work through the assignments.

## HTML

1. What is HTML?
1. What is an HTML element?
1. What is an HTML attribute?
1. What is the difference between a class and an id? When would you use one vs. the other?
1. What HTML would you write to create a form for a new dog with a "name" and an "age"?
1. What are semantic tags? When would you use them over a `div`?
1. Explain what each of the following HTML tags do and when you would use them:
  * `<h1>`, `<h2>`, etc.
  * `<p>`
  * `<body>`
  * `<a>` and the `href` attribute
  * `<img>` and the `src` attribute
  * `<div>`
  * `<section>`
  * `<ul>`, `<ol>`, and `<li>`
  * `<form>`
  * `<input>`

 ## CSS

1. What is CSS?
1. What is a CSS selector? How do you use the ID selector? The class selector?
1. What are the three ways to include CSS in your HTML documents? What are the pros and cons of each?
1. What is the Box Model? Describe each component of the Box Model.

## SQL

### Jumpstart Lab Tutorial

1. What is a database?
1. What is SQL?
1. What is SQLite3?
1. What is a Table?
1. What is a primary key?
1. What is a foreign key?
1. Explain what each of the following SQL commands do:
  * insert
  * select
  * where
  * order by
  * inner join

### PG Exercises

1. How can you limit which columns you select from a table?
1. How can you limit which rows you select from a table?
1. How can you give a selected column a different name in your output?
1. How can you sort your output from a SQL statement?
1. What is joining? When do you need to join?
1. What is an aggregate function?
1. List three aggregate functions and what they do.
1. What does the `group` statement do?
1. How does the `group` statement relate to aggregates?

## Rails Tutorial: Task Manager

**Copy and Paste the link to your Task Manager repo here:**
**Copy and Paste the link to your Static Challenge here:**

1. Define CRUD.
1. Define MVC.
1. What three files would you need to create/modify for a Rails application to respond to a `GET` request to `/tasks`, assuming you have a `Task` model.
1. What are params? Where do they come from?
1. Check out your routes. Why do we need two routes each for creating a new Task and editing an existing Task?