I\'m building an online store using PHP and MySQL and I ran into a big dilemma. The store has about 50 sub categories for products like: Notebooks, Netbooks, HDD, RAM, Software, Games etc) which are d
I am new to using Derby and databses in eclipse, and I have become a tad lost and in need to a bit of help. I have established a database connection, created a new database, and a new schema, within w
I need to design DB for an application using cassandra. How to select column families and s开发者_运维技巧uper column families? I mean, in RDBMS we select tables right? How to select them in case of c
Ruby on Rails App. I have two kinds of users, Company has_many :employees #sample Employee has_one :company
Does it make sense to split a table just for the sake of clearness, maintainability? I have a classic user table, which amongst others stores data like the following
I开发者_运维百科 am trying to build an app where users will be able to transfer tokens for games between each other.Right now I have this design in mind
I\'d like to add several different user types to my rails application. I have 2 different ways I think I could go about this:
I am making a mock database and I have a student table, student_class linking table, and a class table.How can I make it so that a student cannot be registered for the same class twice?
I need help to build a complex relationship among the following tables: Here is the scenario: 1) 1 Family has N familyTypes (unidirectional)
I have no experience of geolocation and what services/APIs are out there so I\'m asking for help. I want to be able to store geolocations that could be a street, city, province, country or continent.
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