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TinyDB資料庫 靜宜大學資管系 楊子青
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Database Facebook has a database of every member’s account information, friends list, and posts. Amazon has a database of just about everything you can buy. Google has a database of information about every page in the World Wide Web.
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Two components to facilitate database activity
TinyDB is used to store persistent data directly on the Android device; this is useful for highly personalized apps where the user won’t need to share her data with another device or person. TinyWebDB is used to store data in a web database that can be shared among devices. Being able to access data from a web database is essential for multiuser games and apps where users can enter and share information.
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TinyDB The TinyDB.StoreValue block stores data to the device’s long-term memory. A tag-value scheme is used for database storage. You retrieve data from the database with the TinyDB.GetValue block.
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TinyDB
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(1) 介面設計
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(2) 程式碼
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(3) 模擬程式執行結果 輸入名字 再更新 資料庫 任意輸入名字，但 不要按更新資料庫 讀取 資料庫
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打包安裝至手機 第一次先輸入名字 關掉APP再開啟，或是按Retrieve DB，會顯示先前貯存的User Name
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