Quiz
Android Midterm #1
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Perguntas do quiz (26)
1[blank_start]Primary key[blank_end] generally an integer auto-increment field
- APrimary key
2[blank_start]logical key[blank_end] what the outside world uses for lookup
- Alogical key
3[blank_start]foreign key[blank_end] generally an integer key pointing to a row in another table
- Aforeign key
4[blank_start]relational power[blank_end] by removing the replicated data and replacing it with references to a single copy of each bit of data we build a "web".
- Arelational power
5[blank_start]join operation[blank_end] links across several tables as part of a select operation
- Ajoin operation
6[blank_start]indexes[blank_end] improve access performance for things like string fields
- Aindexes
7[blank_start]constraints[blank_end] cannot be NULL, etc..
- Aconstraints
8[blank_start]transactions[blank_end] allow SQL operations to be grouped and done as a unit
- Atransactions
9[blank_start]activity[blank_end] is a single, focused thing that the user can do - Equivalent to Frame or Window in GUI toolkits
- Aactivity
10[blank_start]activity stack[blank_end] android keeps navigation history of activities the user has visited
- Aactivity stack
11[blank_start]task[blank_end] is a sequence of activities. can hold activities from several apps.
- Atask
12[blank_start]resumed[blank_end] app is in foreground and user can interact with it
- Aresumed
13[blank_start]paused[blank_end] partially obscure by another activity.
- Apaused
14[blank_start]stopped[blank_end] not visible, in background. all member variables are retained, cannot execute code.
- Astopped
15[blank_start]created[blank_end] and [blank_start]started[blank_end] , system quickly moves from them to the next state!
- Acreated
- Bstarted
16[blank_start]background process[blank_end] when task is not visible to user
- Abackground process
17[blank_start]service process[blank_end] killed only if memory is needed for foreground and visible process
- Aservice process
18[blank_start]foreground process[blank_end] killed only as last resort
- Aforeground process
19how to store state information.
Store state: [blank_start]onSaveInstanceState(Bundle)[blank_end]
Read state: [blank_start]onRestoreInstanceState(Bundle)[blank_end]- AonSaveInstanceState(Bundle)
- BonRestoreInstanceState(Bundle)
20[blank_start]intents[blank_end] message passing mechanism that lets you declare your intentation than an action be performed with a particular piece of data.
- Aintents
21[blank_start]explicit[blank_end] open explicitly certain activity. internal messaging between your app
- Aexplicit
22[blank_start]implicit[blank_end] external messaging between apps, open some activity with certain service
- Aimplicit
23[blank_start]broadcast receiver[blank_end] is a component that does nothing but receive and react to broadcast announcements
- Abroadcast receiver
24[blank_start]sendBroadcast[blank_end] all broadcasts are run in undefined order, often at the same time.
- AsendBroadcast
25[blank_start]sendOrderedBroadcast[blank_end] each receiver executes in turn possible to propagate a result to next receiver.
- AsendOrderedBroadcast
26[blank_start]content provider[blank_end] makes a specific set of the application's data available to other applications.
- Acontent provider
Informações
- Descrição
- Quiz sobre Android Midterm #1, criado por john daryl asparin em 25-10-2018.
- Autor
- john daryl asparin
- Idioma
- English
- Visualizações
- 0
- Avaliação
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