CSE 3901 Final - EXAM Questions with 100%
Correct Answers | Verified | Updated (Actual
Exam)
Terms in this set (33)
Explain model view controller Model
The data (ie state)
Methods for accessing and modifying state
View
Renders contents of model for user
When model changes, view must be
updated
Controller
Translates user actions (ie interactions
with view) into operations on the model
Example user actions: button clicks, menu
selections
Draw an example of MVC http://web.cse.ohio-
state.edu/~giles/3901/lectures/lecture16.pdf
slide 4
Who writes schema.rb and what It is generated! (tool called rake)
is the golden rule? Golden rule: Never edit schema.rb directly
Instead, write a migration
, What is a migration? A migration is Ruby code (a class) that
represents a change in schema
Create new tables (including column
names and column types)
Modify existing tables (adding/removing
columns, or changing associations)
Delete ("drop") existing tables
What is the difference between a Schema is a version of the database. It is
migration and a schema? regenerated every time you do a migration.
Every change in schema means writing a
migration
What is important about The name is meaningful (starts with Add or
migrations for table edits? Remove). ie $ rails g migration
AddNickNameToStudent
nick:string
For the resource: students list GET, /students, Collection, index, list all
the 7 routes that are included POST, /students, Collection, create, show one
with the action pack. Include GET, /students/new, Collection, new, blank
HTTP verb, URL, Resource, form
Method, View GET, /students/3, Member, show, show one
GET, /students/3/edit, Member, edit, filled
form
PUT, /students/3, Member, update, show one
DELETE, /students/3, Member, destroy, list all
Correct Answers | Verified | Updated (Actual
Exam)
Terms in this set (33)
Explain model view controller Model
The data (ie state)
Methods for accessing and modifying state
View
Renders contents of model for user
When model changes, view must be
updated
Controller
Translates user actions (ie interactions
with view) into operations on the model
Example user actions: button clicks, menu
selections
Draw an example of MVC http://web.cse.ohio-
state.edu/~giles/3901/lectures/lecture16.pdf
slide 4
Who writes schema.rb and what It is generated! (tool called rake)
is the golden rule? Golden rule: Never edit schema.rb directly
Instead, write a migration
, What is a migration? A migration is Ruby code (a class) that
represents a change in schema
Create new tables (including column
names and column types)
Modify existing tables (adding/removing
columns, or changing associations)
Delete ("drop") existing tables
What is the difference between a Schema is a version of the database. It is
migration and a schema? regenerated every time you do a migration.
Every change in schema means writing a
migration
What is important about The name is meaningful (starts with Add or
migrations for table edits? Remove). ie $ rails g migration
AddNickNameToStudent
nick:string
For the resource: students list GET, /students, Collection, index, list all
the 7 routes that are included POST, /students, Collection, create, show one
with the action pack. Include GET, /students/new, Collection, new, blank
HTTP verb, URL, Resource, form
Method, View GET, /students/3, Member, show, show one
GET, /students/3/edit, Member, edit, filled
form
PUT, /students/3, Member, update, show one
DELETE, /students/3, Member, destroy, list all
