Simple helper file for standard text sizes in material design. The sizes are provided by the material design documentation https://www.google.com/design/spec/style/typography.html#typography-roboto
Too many type sizes and styles at once can wreck any layout. A typographic scale is a limited set of type sizes that work well together, along with the layout grid. The basic set of styles are based on a typographic scale of 12, 14, 16, 20, and 34.
| <RelativeLayout | |
| xmlns:android="http://schemas.android.com/apk/res/android" | |
| android:layout_width="match_parent" | |
| android:layout_height="match_parent" | |
| android:padding="16dp"> | |
| <TextView | |
| android:text="I’m in this corner" | |
| android:layout_height="wrap_content" | |
| android:layout_width="wrap_content" |
1NF is the most basic of normal forms - each cell in a table must contain only one piece of information, and there can be no duplicate rows.
2NF and 3NF are all about being dependent on the primary key. Recall that a primary key can be made up of multiple columns. As Chris said in his response:
The data depends on the key [1NF], the whole key [2NF] and nothing but the key [3NF] (so help me [Codd][1]).
Say you have a table containing courses that are taken in a certain semester, and you have the following data:
