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Are foreign keys really necessary in a database design?
As far as I know, foreign keys (FK) are used to aid the programmer to manipulate data in the correct way. Suppose a programmer is actually doing this in the right manner already, then do we really need the concept of foreign keys?
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How do I use a compound drawable instead of a LinearLayout that contains an ImageView and a TextView
Ran the new Lint tool against my code. It came up with a lot of good suggestions, but this one I cannot understand.
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How to update a record using sequelize for node?
I'm creating a RESTful API with NodeJS, express, express-resource, and Sequelize that is used to manage datasets stored in a MySQL database.
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Difference between one-to-many and many-to-one relationship
What is the real difference between one-to-many and many-to-one relationship? It is only reversed, kind of?
10 Answers
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Why does ContentResolver.requestSync not trigger a sync?
I am trying to implement the Content-Provider-Sync Adapter pattern as discussed at Google IO - slide 26. My content provider is working, and my sync works when I trigger it from the Dev Tools Sync Tester application, however when I call ContentResolver.requestSync(account, authority, bundle) from ...
Heap vs Binary Search Tree (BST)
What is the difference between a heap and BST?
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When to use CouchDB over MongoDB and vice versa
I am stuck between these two NoSQL databases.
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Is it a good practice to use try-except-else in Python?
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How to execute shell command in Javascript
I want to write a JavaScript function which will execute the system shell commands ( ls for example) and return the value.
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