data-modeling
Please help me design a database schema for this:
I\'m designing a python application which works with a database. I\'m planning to use sqlite. There are 15000 objects, and each object has a few attributes. every day I need to add some data for e开发[详细]
2023-02-17 03:52 分类：问答Can there be relationship with junction-entity?
On many to many rela开发者_运维知识库tionship between two entity, there will be a junction entity in between.[详细]
2023-02-16 02:32 分类：问答Many-to-Many and Many-to-one relation
I would really appreciate it if someone can validate the many-to-many and Many-to-one relations in my code:[详细]
2023-02-15 15:00 分类：问答Designing a database with periodic sensor data
I\'m designing a PostgreSQL database that takes in readings from many sensor sources. I\'ve done a lot of research into the design and I\'m looking for some fresh input to help get me out of a rut her[详细]
2023-02-15 14:24 分类：问答Best Way to Implement a Versioning System for User Edited Content
I have a requirement to let users edit each others entries.So in case of bad entries, I need to be able to go ba开发者_如何学运维ck to an earlier version.[详细]
2023-02-15 09:48 分类：问答DB question for the car-knowledgeable
I\'m not so familiar with cars and I\'m working on a data model to support the various pieces of information relating to cars.[详细]
2023-02-15 08:43 分类：问答Google App Engine using UserProperty to link data
I am writing an application in GAE.In order to link the currently logged in user to data in my application I have been relying on equality between users.get_current_user() and members.user (see model[详细]
2023-02-15 07:15 分类：问答Entity Framework CTP5 Code-First Mapping - Foreign Key in same table
How would I map something like this using the modelBuilder? Where theres a nullable foreign key referencing the same tables primary key[详细]
2023-02-14 10:52 分类：问答Need some help with database table design with shopping cart
Suppose i have tables Products-------product_id , name , price , size shopping_cart------cart_id,item_id,user_id,quantity[详细]
2023-02-14 07:18 分类：问答How to capture state of an entity in Database during the course of business process?
I\'m asking those who were already dealin开发者_如何转开发g with this situation to share their experience.[详细]
2023-02-14 07:10 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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