App Inventor TinyDB

A database in App Inventor that can permanently save data on a device.

• TinyDB

• TinyWebDB

• CloudDB

• list

Random Access Memory is ________ which means that any data that is stored can be lost when the app/program is closed and then reopened.

• persistent

• volatile

• data stored on a device

• short term

If you turn off your device, data in TinyDB will

• be saved.

• be lost.

• persist.

• be stored locally.

Data in TinyDB

• can be shared with another device or person.

• cannot be shared with another device or person.

• is lost when the app is closed and then reopened.

• is volatile.

How is data stored in TinyDB?

• As a table of tag-value pairs.

• Tag must be a string.

• Value may be a number, string or list.

• As a record on a file.

The tag gives the data you're storing in the database a name-a way to reference the information-while the value is the data itself.

• Sometimes

• Always

• Never

The tag for a row in TinyDB is

• a key

• unique

• the data

• a string

To transfer data to long term memory, use the

• TinyDB.StoreValue block

• TinyDB.GetValue block

To retrieve data from TinyDB,

• use the TinyDB.StoreValue block by providing a tag.

• use the TinyDB.GetValue block by providing a tag.

• access data by making a call to it.

• you are storing data in the database.

A TinyDB database is

• an organized collection of information.

• a list of values.

• a variable.

• a table of tag-value pairs.