I\'m new to Hibernate and DBs in general, so pardon the elementary question. I am working with the DIS protocol and specifically the Open-DIS implementation of DIS.In DIS, each EntityStatePdu (contai
I\'m working on a small feature in a Java web application that very closely resembles the vote up/down feature here at stackoverflow.com. I have a database that looks like the following:
I have the following (simplified) structure that allows me to track equipment that has been assigned to a cell. Since equipment can only be in the cell once in the table, I\'ve created a constraint th
I don\'t want a composite primary key. All I want is 开发者_如何学Cthat another field must be also unique.Yes, you just need to mark the column as unique.
I\'ve a开发者_Go百科n application where I read all the sub-folders inside a folder. I want to read only the folders created by my application. So I want to generate unique identifiers as folder names
I have a User entity in my entity model: Username and Email should be unique but for now EF4 doesn\'t support this.
I have a table \'users\' with \'login\' column defined as: [login] VARCHAR(50) UNIQUE NOT NULL Now I want to remove this unique constraint/index using SQL script. I found its name UQ_users_7D78A4E7
I think t开发者_如何转开发his will be a bit esoteric but wanted to throw this out there in case anyone\'s tried anything like this, or if someone\'s already tried and found it to be impossible.
I\'m developing a new application which is based on a legacy database. The old legacy database does not use reference int开发者_如何学编程egrity and first we try to not change the existing schema. I s
I\'m using ormlite for Android and I\'m trying to get a multiple column unique-constraint. As of now i\'m only able to get a unique constraint on indiviudal columns like this:
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