Most voted "database" questions
A database (its abbreviation is BD, DB, database) is an organized collection of data typically used to model certain situations. Use this tag if you have questions about designing a database. If this is a specific database management system, like Mysql, for example, use this tag instead.
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viewsExcel to real-time database with C#
Is it possible to take the data from an Excel spreadsheet (which is updated every second) and save the information every second in a database? The worksheet should be kept open at all times for the…
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viewsAny tips for those who are starting in programming and in the area of Data Science?
I am starting a training course in the area of Data Science, I do not master any type of programming. Any tips where to start? (Online courses, platforms, tools, websites)
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viewsphp does not update registry in bd mysql
I’m trying to update the database, it returns the message that the update was made, however, when seeing in the database, the update was not made. What should happen: When clicking the save button,…
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viewsCompany Project/ Project for the company I’m interning
English Hi Everyone my name is Guilherme. and i need to do a project for my company and i don’t know how to do it. I would like to know if you are free to do the following project and if you have…
databaseasked 3 years, 2 months ago GuilhermeT 1 -
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answer105
viewsMysql not creating the PHP content line
When I try to pass values to my database I don’t find them in it, I’m using php with MAMP. Follows the code: <?php error_reporting(E_ALL);ini_set('display_errors', 1); $host = "localhost:8889";…
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viewsTrigger for immovable system
Staff I am developing a property system and I need every five minutes the bank to read the property information, process and decrypt the information, send a processing confirmation and discard the…
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answer1017
viewsHow to search for the lowest value between columns?
I have a table with the product fields, price 1, price 2, price 3. How do I show the product at the lowest price?…
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answer43
viewsClear database column from time to time
Is it possible to clear the database column at the end of the day/week/month? I have a code that records the number of calls an employee makes. For example: at the end of the day he performed 17…
databaseasked 7 years, 2 months ago Tales Igor 13 -
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viewsWhat are the differences between a PL/SQL programmer and an Oracle DBA?
Could someone explain to me the differences between the programmer PL/SQL and the DBA Oracle? I know there are many differences, but I’m not sure how to specify them. I have some doubts too... For…
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answer178
viewsError in SQL query with PDO
I can’t make the query, when I try to make it, I get the error: Erro PDOStatement Object ( [queryString] => SELECT userid FROM usuario WHERE email=:email and senha=:senha ) <?php…
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answer48
viewsMy code only takes the last element of the database
My code only takes the last element of the database, but it lists the correct amount there and the log.i shows that is catching all. Why it does not work? package br.app.lista; import…
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viewsGenerate a query number?
I have a search system and I want to generate a number for each search made in the database, I’m thinking of using the rand to generate the numbers, then take the generated number and save to the…
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answer39
viewsI cannot write to the PHP database
File 1 picks up the data to enter into the database, the name and email are correctly being recorded, but the phone does not go to the database. FILE 1 <script type="text/javascript"> function…
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answer60
viewsShow bd field on web page
I’m new in web development, I took a course and I’m using as a base the site we developed there. But some things I still don’t understand well and I’m having trouble pulling the field nome database.…