By Adam Stroud
Battle-Tested suggestions for Storing, dealing with, and Sharing Android information this is often the 1st consultant to target essentially the most serious points of Android improvement: easy methods to successfully shop, retrieve, deal with, and percentage info out of your app’s inner database. via real-world code examples, which you could use on your personal apps, you’ll the right way to take complete good thing about SQLite and the database-related sessions on Android. part of Addison-Wesley’s Android™ Deep Dive sequence for knowledgeable Android builders, Android Database most sensible Practices attracts on Adam Stroud’s wide event prime state of the art app tasks. Stroud experiences the center database thought and SQL options you want to successfully construct, manage, and skim SQLite databases. He explores SQLite intimately, illuminates Android’s APIs for database interplay, and stocks smooth top practices for operating with databases within the Android surroundings. via a whole case learn, you’ll the best way to layout your facts entry layer to simplify all points of information administration and steer clear of undesirable technical debt. You’ll additionally locate specific suggestions for universal demanding situations in construction data-enabled Android apps, together with matters linked to threading, distant info entry, and exhibiting facts to clients. vast, up to date pattern code is accessible for obtain at github.com/android-database-best-practices/device-database.
Read Online or Download Android Database Best Practices PDF
Similar tablets & e-readers books
Methods to construct apps for cellular units on Cloud structures the market for apps is ever increasing, expanding the aptitude to earn cash. With this consultant, you will construct cross-platform purposes for cellular units which are supported by means of the ability of Cloud-based prone resembling Amazon net prone.
Cellular trade possibilities are in all places humans pass, 24/7. And PayPal is within the vanguard of harnessing these possibilities, delivering cellular companies quicker, more straightforward, more secure, and extra confident purchaser checkout stories. PayPal’s cellular checkout instruments help ecocnomic web pages and apps on all of today’s smartphones, pills, and different moveable units.
Mac OS X Snow Leopard for strength clients: complex features and methods is for Mac OS X clients who are looking to transcend the most obvious, the normal, and the straightforward. If are looking to dig deeper into Mac OS X and maximize your talents and productiveness utilizing the world's slickest and so much stylish working approach, then this can be the booklet for you.
Study the basic techniques of OS clustering, Oracle Solaris clustering high-level layout, Oracle Solaris clustering implementation utilizing VirtualBox, and Veritas clustering implementation utilizing VirtualBox. Oracle Solaris and Veritas Cluster: An Easy-build advisor exhibits you ways to enforce a cluster in your laptop or machine units utilizing virtualized community, host, and garage configuration.
- Head First iPhone and iPad Development: A Learner's Guide to Creating Objective-C Applications for the iPhone and iPad
- Creating Dynamic UI with Android Fragments
- Operating Systems
- Android from A to D
- Learn Design for iOS Development
- Samsung Galaxy Tab 10.1 for Dummies
Extra info for Android Database Best Practices
For example, a trigger can be created to run an SQL statement whenever a row is added or deleted in the database. CREATE TRIGGER Like other CREATE statements discussed previously, the CREATE TRIGGER statement assigns a name to a trigger by providing the name to the CREATE TRIGGER statement. DROP VIEW IF EXISTS schema-name . org view-name Data Definition Language After the name, an indication of when the trigger needs to run is defined. This definition of when a trigger should run has two parts: the operation that causes the trigger to run, and when the trigger should run in relation to that operation.
This means that in WAL mode, a commit can occur without ever actually touching the main database file. Allowing commits to occur without a need to change the database file allows read and write operations to be performed simultaneously because they are performed on two different files. The read operation is performed on the main database file and the write operation is performed on the WAL file. At some point the data from the WAL file needs to be added to the main database file. This is called a checkpoint.
1 is run and returns without an error, the d evice table is created with three columns: model, nickname, and display_size_inches of types TEXT, TEXT, and REAL respectively. In addition, the table has a c onstraint on the model column to ensure that every row has a non-null model name. The constraint is created by appending NOT NULL to the end of the column name in the CREATE statement. The NOT NULL constraint causes SQLite to throw an error if there is an attempt to insert a row into the table that contains a null value for the model column.