Dot Net

Dot Net

1626316693

Visualizing Database Query Plans - Entity Framework Community Standup

Learn what a query plan is, how to view EF Core query plan in LINQPad, find missing indexes, and improve performance of your queries.

Community Links: https://www.theurlist.com/efcore-standup-2021-07-14

Featuring: Jeremy Likness (@jeremylikness), Giorgi Dalakishvili (@GioDalakishvili)

Get your questions answered on the Microsoft Q&A for .NET - https://aka.ms/dotnetqa

Learn .NET with free self-guided learning from Microsoft Learn: http://aka.ms/learndotnet

#efcore #linq #linqpad

#database #linqpad #efcore #linq

What is GEEK

Buddha Community

Visualizing Database Query Plans - Entity Framework Community Standup
Dot Net

Dot Net

1626316693

Visualizing Database Query Plans - Entity Framework Community Standup

Learn what a query plan is, how to view EF Core query plan in LINQPad, find missing indexes, and improve performance of your queries.

Community Links: https://www.theurlist.com/efcore-standup-2021-07-14

Featuring: Jeremy Likness (@jeremylikness), Giorgi Dalakishvili (@GioDalakishvili)

Get your questions answered on the Microsoft Q&A for .NET - https://aka.ms/dotnetqa

Learn .NET with free self-guided learning from Microsoft Learn: http://aka.ms/learndotnet

#efcore #linq #linqpad

#database #linqpad #efcore #linq

Ruth  Nabimanya

Ruth Nabimanya

1620633584

System Databases in SQL Server

Introduction

In SSMS, we many of may noticed System Databases under the Database Folder. But how many of us knows its purpose?. In this article lets discuss about the System Databases in SQL Server.

System Database

Fig. 1 System Databases

There are five system databases, these databases are created while installing SQL Server.

  • Master
  • Model
  • MSDB
  • Tempdb
  • Resource
Master
  • This database contains all the System level Information in SQL Server. The Information in form of Meta data.
  • Because of this master database, we are able to access the SQL Server (On premise SQL Server)
Model
  • This database is used as a template for new databases.
  • Whenever a new database is created, initially a copy of model database is what created as new database.
MSDB
  • This database is where a service called SQL Server Agent stores its data.
  • SQL server Agent is in charge of automation, which includes entities such as jobs, schedules, and alerts.
TempDB
  • The Tempdb is where SQL Server stores temporary data such as work tables, sort space, row versioning information and etc.
  • User can create their own version of temporary tables and those are stored in Tempdb.
  • But this database is destroyed and recreated every time when we restart the instance of SQL Server.
Resource
  • The resource database is a hidden, read only database that holds the definitions of all system objects.
  • When we query system object in a database, they appear to reside in the sys schema of the local database, but in actually their definitions reside in the resource db.

#sql server #master system database #model system database #msdb system database #sql server system databases #ssms #system database #system databases in sql server #tempdb system database

Ahebwe  Oscar

Ahebwe Oscar

1620185280

How model queries work in Django

How model queries work in Django

Welcome to my blog, hey everyone in this article we are going to be working with queries in Django so for any web app that you build your going to want to write a query so you can retrieve information from your database so in this article I’ll be showing you all the different ways that you can write queries and it should cover about 90% of the cases that you’ll have when you’re writing your code the other 10% depend on your specific use case you may have to get more complicated but for the most part what I cover in this article should be able to help you so let’s start with the model that I have I’ve already created it.

**Read More : **How to make Chatbot in Python.

Read More : Django Admin Full Customization step by step

let’s just get into this diagram that I made so in here:

django queries aboutDescribe each parameter in Django querset

we’re making a simple query for the myModel table so we want to pull out all the information in the database so we have this variable which is gonna hold a return value and we have our myModel models so this is simply the myModel model name so whatever you named your model just make sure you specify that and we’re gonna access the objects attribute once we get that object’s attribute we can simply use the all method and this will return all the information in the database so we’re gonna start with all and then we will go into getting single items filtering that data and go to our command prompt.

Here and we’ll actually start making our queries from here to do this let’s just go ahead and run** Python manage.py shell** and I am in my project file so make sure you’re in there when you start and what this does is it gives us an interactive shell to actually start working with our data so this is a lot like the Python shell but because we did manage.py it allows us to do things a Django way and actually query our database now open up the command prompt and let’s go ahead and start making our first queries.

#django #django model queries #django orm #django queries #django query #model django query #model query #query with django

Justice  Reilly

Justice Reilly

1594205220

ASP.NET Community Standup - July 7, 2020 - FAST Framework

Join members from the ASP.NET teams for our community standup covering great community contributions for ASP.NET, ASP.NET Core, and more. Community links for

#asp.net #community #standup #fast #framework #.net

Kaia  Schmitt

Kaia Schmitt

1627002660

How to Use Select Query in SQLite Database Python | Python Built-In Database - V

Querying Data - Python Built-In Database - SQLite.

Github - https://github.com/theindianinnovation/Python-SQLite-Database-Tutorial

#python #database #sqlite database python #query #sqlite #sqlite database