We have a service where we literally give away free money. Naturally said service is ripe for abuse. To defend against this we do the following:
I\'ve been using LINQ for a while now, but seem to be stuck on something with regards to Unique items, I have the folling list:
is there another REGEX way (or another way) to ensure that a model class field would be unique? (it is not a key, or at least not declaredas a ke开发者_运维知识库y, is shoulb be a simple CharField)
I need to know if there any kind of un开发者_如何转开发ique object that i can use to differentiate between smart cards
I use example with Rails 3, but I believe that this is true for Rails 2.3 as well. Suppose, I have model City that has many Locations. I try to find Cities that have locations.
I have noticed that if I have a unique compound keys for two columns, column_a and column_b, then my sql ignores this constraint if one column is null.
I am using hibernate for Java, and I want to be able to select users by id or by name from the database.
I am creating a table ,in the table two开发者_如何学C column is unique, I mean columnA and columnB do not have same value:
In this code, I have an Entity Framework 4 model with a single \"Thing\" entity that has an Id and a Name(string) column. I would like to ensure that when I call FindOrCreateThing(name) from multiple
wtforms is a forms validation and rendering library for python web development but i can\'t find how to ha开发者_运维问答ndle the usernameand email Unique ,
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