[database] Forum Topics

i want to full source code for attendance capturing such as In and out time, total hours, odd and even punch so pls Any one help me....

I was working on an infix to postfix program (using stacks), but something went wrong somewhere. Please check whether my intopost technique is right because I am getting the output as infix without conversion. //stack class also containing the intopostfix method import java.util.*; public class Stack { int i,j; char …

In China, many manufacturers are 'replacing IOE' and are moving closer to open source databases.openGauss is an open source database developed by Huawei itself. Although there is policy support,but ，Oracle has always been ranked first in DB-Engines Ranking. So, do you think openGauss database can replace Oracle database?

What is the difference between openGauss and postgresql in the key technologies?Can you elaborate on this from the following points (including but not limited to): runtime model, transaction mechanism, data storage and organization, query optimizer, etc.

Hi guys, i am new here. Been on this code for some days and i seem stuck and not getting the expected output from this code. first the code functions as a FIFO QUEUE where it takes input from the user and put it at the beginning of a list …

Hi. I have a local installation of SQLite3 and PHP which runs a small in house PHP application so sql injection is not an issue. I am able to execute the following: if(isset($_GET['deletequote'])) { $qno = $_GET['deletequote']; echo $qno;?><br><?php // for testing $db = new SQLite3('./fi_data.db') or die('Cannot delete quote. …

I've converting my website to PHP from just static HTML. In the process, my PHP Index file is pulling old information from an unknown source Here is the specific problem. When I add a paragraph tag to my div id="main" section, I get "Get the Management Certification you need to …

## Introduction ## When working with Room, you might have run into a situation where you only want to update specific fields of an entity instead of replacing the entire row. In this tutorial, we will learn how to do this in two different ways. ## Goals ## At the …

I want to pick whats best starting out that will help me move to better language in the future. Preferably something to benefit me in employment/University. Im not the quickest of learners. Thank you

I work on `sql server 2017` I run script depend on `python language v 3.10` . I need to export data to excel fileStudentExport.xlsx already exist, and keep header without change after export. header of excel file StudentExport.xlsx before export data to it as below `StudentId,StudentName` after run script query …

Hi all, I hope someone can help me with the following. I have a script that reads a txt file and displays the correct values. I only want to add it to the database now, but I can't manage this. below the script <?php include '../includes/connect.php'; if(!$conn) { die(mysqli_error()); } …

Guys, what am I doing wrong? The database "expiry" value is > 0 but I go to expiredpage.html. ======================================================== the code: <?php $link = mysqli_connect("localhost", "root", "", "numbersdb"); // Check connection if($link === false){ die("ERROR: Could not connect. " . mysqli_connect_error()); } echo "<center>";echo date('m/d/y');echo "<br />"; $id='id'; $expiry='expiry'; if($expiry==7) …

## Introduction ## When working with Room, you might have wondered how to run multiple statements in a single transaction. Running multiple statements in one transaction has two main benefits: 1. Your statements can reuse the same connection. 2. They can all fail together if something goes wrong. Regarding the …

## Introduction ## When working with Room, you might have wondered how to describe one-to-many relationships between entities. In this tutorial, we will learn how to do just that. ## Goals ## At the end of the tutorial, you would have learned: 1. How to define one-to-many relationship for entities …

xamarin form to connect sql server Database

## Introduction ## There are many ways to describe relationships between Entities in Room, one of which is to embed an entity inside of another. When embedding an Entity, the columns of the embedded Entity are extracted as member columns of the enclosing entity. In this tutorial, we will learn …

how to barcode scanner in xamarin.form and connect sql server DataBase

I want to scanner barcode in Xamarin.Form and bacode result go to sql server database

Hello everyone! I working on a social network alike page whare I want to implement a messaging system. I can do all that and I have it working. What I want is, when I get two or more messages from someone. I only want to display the lates message from …

It's running but it deosn't read any data from the access(blank grid view), what's wrong please help me Private Sub rrrrr(sender As Object, e As EventArgs) Handles r1.Click, MyBase.Click, Button9.Click, Button8.Click, Button7.Click, Button6.Click, Button5.Click, Button4.Click, Button35.Click, Button34.Click, Button33.Click, Button32.Click, Button31.Click, Button30.Click, Button3.Click, Button29.Click, Button28.Click, Button27.Click, Button26.Click, Button25.Click, Button24.Click, Button23.Click, Button22.Click, …

## Introduction ## When working with Room, there might come a situation during bulk CRUD operations that it would be useful to add a Foreign Key to one of our tables. This provides two main benefits: cascading delete (*must be configured manually*) and enforcing data integrity on linked entities. In …

## Introduction ## If your Android Application uses Room, then you might have wondered how to prepopulate a Room database. In this tutorial, we will learn how to prepopulate a Room database. ## Goals ## At the end of the tutorial, you would have learned: 1. How to prepopulate a …

Hello guys, I'm using mustache php template engine with classes. My system is extendable via extensions which is injected in basecontroller construct method... The extensions is working correctly, but in them i have html and js... I want to move html/js in external files but i need to works with …

I'm currently building a SaaS product, it's just me working on it, and its been a long process. I need to generate revenue and created an Instagram account to find clients that need web & graphic services, I'm thinking of making it a recurring monthly package that costs about 100$ …

I have been trying to connect to watermelonDB however i keep getting this error TypeError : null isnot an object (evaluating 'DatabaseBridge[methodName]') I looked all over the network but couldn't find a solution the problem that i am not generting or writing the DataBaseBridge it should be generated automatically with …

Hello! I'm working on this linked list project where I'm supposed to save the employee data in a linked list and apply some operations. and I am new with c++ so I'll show you my code and please help me with it. my questions are: 1- whenever I enter a …

## Introduction ## When working with a Room database, we are mostly restricted to save data using primitives (*and boxed primitives*). Reference types are not supported right out of the box, but can be enabled by creating additional [TypeConverter](https://developer.android.com/reference/androidx/room/TypeConverter). If you are familiar with ORM-light frameworks such as Spring JDBC, …

What is great about Amazon is that there is no one way to start an Amazon business. From the business model you choose the products you decide to sell, there are many ways to succeed on the platform. However, the steps required to get up and running on Amazon remain …

**Hello guys,** i need with something, i have aproject that am doing now and i have used php so the only challnge am meeting is to calculate grades for the following Overall marks is 100 (Has been divided into three assessments) **assignment 10% midsemester 30% and end semester is 60%** …

Pls let me know which tool or software to use to develop mobile app. I have 27 yes exp in vb6 and sql. Need to change to mobile app. Pls guide