我正在为我的一个班子建造一个项目,需要帮助选择适当的数据库。
因此,我希望在网上建立组织图,并在一些数据库中予以节省。 我知道这在技术上是一个树木结构,因此,我想知道,如果使用像新4j这样的图表数据库,将胜于文件JSON数据库(如MongoDB)。
理想的情况是,我需要能够节省未清的元数据(例如姓名、职业、以前的节点、第......页上的排位),以便能够在保存数据的同时,在稍后时间打开文档(如点子的位置在网页上相同)。
最后,我还需要一个数据库,以便在出现变化时迅速更新节点。
任何帮助都是巨大的。 我对NSQL和图表数据库的了解不多。
$db_user="root"; $db_host="localhost"; $db_password="root"; $db_name = "fayer"; $conn = mysqli_connect($db_host,$db_user,$db_password,$db_name) or die ("couldn t connect to server"); // perform query ...
I am in the early stages of developing a database-driven system and the largest part of the system revolves around an inheritance type of relationship. There is a parent entity with about 10 columns ...
I m writing a Java web app in my free time to learn more about development. I m using the Stripes framework and eventually intend to use hibernate and MySQL For the moment, whilst creating the pages ...
Does anybody know if it is possible to move some (not all) users from one ASP.NET membership database to another? (for the purposes of migrating some users to another database on another machine, but ...
Is it because of size? By the way, what is the limit of the size?
I am trying to join two tables that reside in two different databases. Every time, I try to join I get the following error: An association from the table xxx refers to an unmapped class. If the ...
For example, I have a table, and there is a column named Tags . I want to know if value programming exists in this column. How can I do this in ADO.NET? I did this: OleDbCommand cmd = new ...
I m trying to migrate one of my PHP projects to Doctrine. I ve never used it before so there are a few things I don t understand. In my current code, I have a class similar to this: class ...
