Foreign key should necessarily be a candidate key for a table (sa开发者_运维技巧y table1)? I know that Foreign key references primary key of some other table (say table2). But for the table1, is it ne
Ok, so I am creating a sql database to keep track of inventory. I have around 170 individual types of items. Some of the types have more than one item in them. For example: I have a cisco switch (Type
I\'m creating a DB schema for PostgreSQL 9.0 DB that will represent many real-world entities, with a table per entity. Most of these entities can have 0 or more free-text notes associated with them. A
I have tw开发者_Go百科o tables, meetings_table and items_table. items_table has three columns: id item
I have a task to design a SQL database that will record values for the company\'s commodity products (sku numbers). The company has 7600 unique product items that need to be tracked, and each product
Products Table: idproduct_name ----------------- 20Toy Car开发者_如何学运维 Product_attr Table: idproduct_idlabelvalue
I\'ve hit a bit of a wall ... here is my simplified schema: TABLE users id TABLE assets id userid TABLE presentations
Say I create tables in Pylons by running paster setup-app deve开发者_StackOverflow社区lopment.ini
I have one application where \"persisting to database\" is consuming 85% time of the entire application flow.
I require an employee table with this structure : Employee (employeeid(int),supervisorids()) The supervisorid is nothing but the employeeid of the supervisor
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