shared-data | 易学教程

How can I share local database of an existing app with a new app and make both work on it simultaneously?

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问题 One of my client's inventory management project supports online as well as offline mode to manage huge inventory data and is built using Xamarin.Forms & sqlite-net. Now, the client wants to create another similar kind of app and wants us to use the same local db of the first app. The actual functionality he needs is that if I have data in one app then it can be shared to the second app and vice-versa. Like, if I'm logged into the first app then user automatically gets logged in to second app

How can I share local database of an existing app with a new app and make both work on it simultaneously?

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Domain compatibility: where should shared data be written?

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问题 We've written an application that works fairly well in XP, but is having serious migration issues to Vista and Windows 7, probably due to where user data is being written. The use case is this: Individual users need to log in to the machine and use it to acquire data. Supervisor users need to be able to look over the shoulder of individual users and verify that they're performing their jobs properly. These supervisors also need to check system logs to make sure that the system is performing

Shared Database vs. Messaging Architecture

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问题 I was down the pub with a friend of mine yesterday and we started discussing the architecture in use at the company he works at. The conversation basically surrounded the pros/cons of a shared database architecture against a distributed independent application architecture - we couldn't get to a consensus in which case I'd like to hear people's opinions on the pros/cons of both approaches. Basically, the company that he works for has a large architecture with many different applications. Some

Sharing data between master thread and slave thread in interrupt driven environment in C

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问题 I have the following: f1() { while(1) { call f(2) if hardware interrupt pin goes high } } f2() { if( th() not started ) { start thread th() } else { return thread th() status } } th() { time-consuming operation } At the moment, I use the following to initiate a struct in f2(): static struct SharedData shared; if( shared == NULL) { initialize shared } Then I pass a pointer to shared to the thread. The thread then updates shared periodically. f2() will then know if th() has been started based

Why would an SSRS report produce different data when run from SQL Server Reporting Services than when run using the Preview tab?

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问题 I've got a report running the data I want - from the Preview tab, that is, or when run using F5 in VS 2010. But when I upload the report (.rdl file) to SQL Server Reporting Services, and run the updated report from there, it still shows the old bunch of (restricted) data. Am I missing a step - does something need to be done other than uploading the .rdl file from the project? It did tell me the DataSource was wrong, but once I specified the right one, it ran without a hitch (except for the

Shared Database vs. Messaging Architecture

阅读更多关于 Shared Database vs. Messaging Architecture

I was down the pub with a friend of mine yesterday and we started discussing the architecture in use at the company he works at. The conversation basically surrounded the pros/cons of a shared database architecture against a distributed independent application architecture - we couldn't get to a consensus in which case I'd like to hear people's opinions on the pros/cons of both approaches. Basically, the company that he works for has a large architecture with many different applications. Some applications have a single database that they share between them. For example, there is 1 application

How to pass data between two components in Angular 2

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I am looking for solution to pass data to another component and similarly access methods of another component in other (both are parallel components). For example i have two components home.ts and map.ts . I get some data into map.ts and need to pass that in home.ts and vice versa. You can transfer data using service. Make a service that holds the data while you switch components. Below is an example. import { Injectable } from '@angular/core'; @Injectable() export class TransfereService { constructor( private router:Router, private companyServiceService:CompanyServiceService ) { } private

How to pass data between two components in Angular 2

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问题 I am looking for solution to pass data to another component and similarly access methods of another component in other (both are parallel components). For example i have two components home.ts and map.ts . I get some data into map.ts and need to pass that in home.ts and vice versa. 回答1: You can transfer data using service. Make a service that holds the data while you switch components. Below is an example. import { Injectable } from '@angular/core'; @Injectable() export class TransfereService