datamodel

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Column-family concept and data model

I\'m investigating the different types of NoSQL database types and I\'m trying to wrap my head around the data model of column-family stores, such as Bigtable, HBase and Cassandra.[详细]

2023-01-07 07:04 分类：问答
ORM tool OR build the object to relational mapping layer manually

I am trying to determine what if any advantage or disadvantage there is to using an object to relational mapping layer like hibernate or the Microsoft Entity framework when building the data layer.[详细]

2023-01-06 05:58 分类：问答
Cassandra getting data (query on different attributes)

how i can get data from Cassandra using value posts = { \'1\': {//this post id \'user_id\': \'4\', \'body\': \'This is awesome!\',[详细]

2023-01-05 22:42 分类：问答
This is wrong: a column can references primary keys in different tables depends on value of another column?

One of my colleague designed a table schema, and in one of the tables a column can references primary keys in different tables depends on value of another column. I know it is differently wrong, but c[详细]

2023-01-05 22:18 分类：问答
Datamodel diagram

what are the relationships we specify in datamodel diagram? And also i have one doubt I have three tables[详细]

2023-01-02 00:33 分类：问答
Advanced DataModel in Xcode with CoreData

I have a question regarding a rather advanced DataModel which I would like to use with CoreData. Before I get into details about what I did so far, I will describe what I want to do.[详细]

2023-01-01 22:27 分类：问答
Problems with CoreDataBooks Example from Apple

I am currently playing with CoreData and have a problem with the CoreDataBooks Example from Apple. Basically I just wanted to extend the data model. I updated the model class aswell and no compiler e[详细]

2022-12-31 13:36 分类：问答
ASP.NET MVC2 - Does Html.EditorForModel() work on the nested data model?

My test shows it doesn\'t work. It ignores the nested data in model. Can anyone con开发者_StackOverflow社区firm this?What do you mean? If you are defining an EditorTemplate for a specific type, you ha[详细]

2022-12-28 10:25 分类：问答
How to extend/patch an existing module or package?

I want to extend some locale-specific features of a python application named OpenERP. All I need is implementing a third party module.function that would be called every tim开发者_JAVA百科e OpenERP ca[详细]

2022-12-25 11:11 分类：问答
Datamodel for a MVC learning project

I am trying to learn Microsoft MVC 2, and have in that case found a small project I wanted to deploy it on.[详细]

2022-12-24 17:50 分类：问答