database

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SQLite: Prevent fragmentation

I need to fill a database with millions of records, and my current routine for that looks something like:[详细]

2023-04-13 00:31 分类：问答
How to fill a no-value colum with a default value in result set (MySQL)

I have a query like follows: SELECT table1.time, table1.co, table2.co_ro FROM( SELECT p1.time, SUM(p1.kpi_0) AS co[详细]

2023-04-13 00:19 分类：问答
Facebook Credits API PHP - Update user_id in mySql database after purchase

I have an app where I want users to be able to buy in-game credits called coins. I have set my callback url, and can make a purchase, I get an order_id and settled from the callback, but how do I upd[详细]

2023-04-13 00:12 分类：问答
deleting a comment you posted with php code?

I was wondering if you can maybe help me out here... I created a link sharing website and managed to create a comment on a shared link.[详细]

2023-04-13 00:05 分类：问答
ASP.NET MVC Database connectivity using ADO.NET

I\'m new to ASP.NET MVC. I want to work with SQL Server database with stored procedures without using LINQ but standard ADO.NET. How can I do that? Is there any useful开发者_JAVA技巧 video tutorial or[详细]

2023-04-12 23:43 分类：问答
Is Python DBM really fast?

I was thinking that native DBM of Python should be quite faster than NOSQL databases such as Tokyo Cabinet, MongoDB, etc (as Python DBM has lesser featur开发者_如何学JAVAes and options; i.e. a simpler[详细]

2023-04-12 23:34 分类：问答
Concurrency in database systems with/without server

It is usually noted that simple database systems which does not have server (e.g. GDBM, SQLite, etc) are weaker for concurrent connections.[详细]

2023-04-12 23:26 分类：问答
How to create a login for clients?

im currently setting up a website which will allow clients to log in, upload, respond to questions etc.[详细]

2023-04-12 23:18 分类：问答
What are some real world implications of non-ACID database compliance?

Specifically is there some risk that data can be lost?I\'m looking at running an intensive transaction processing system where it is critical that nothing be lost.Are there any examples of NoSQL being[详细]

2023-04-12 23:16 分类：问答
Speed of writing to a text file or via key/value database

I tested writing to a text file simply via shell command or php. Using a while loop for 1 million cycles, appending cycle number into the file (as $i\\n). I thought this must be fastest way to store d[详细]

2023-04-12 23:14 分类：问答