Tutorial by Examples: baser

One might want to group their data by the runs of a variable and perform some sort of analysis. Consider the following simple dataset: (dat <- data.frame(x = c(1, 1, 2, 2, 2, 1), y = 1:6)) # x y # 1 1 1 # 2 1 2 # 3 2 3 # 4 2 4 # 5 2 5 # 6 1 6 The variable x has three runs: a run of l...

To use multiple databases in Django, just specify each one in settings.py: DATABASES = { 'default': { 'NAME': 'app_data', 'ENGINE': 'django.db.backends.postgresql', 'USER': 'django_db_user', 'PASSWORD': os.environ['LOCAL_DB_PASSWORD'] }, 'users': {...

First Initialize FirebaseDatabase: FirebaseDatabase database = FirebaseDatabase.getInstance(); Write to your database: // Write a message to the database FirebaseDatabase database = FirebaseDatabase.getInstance(); DatabaseReference myRef = database.getReference("message"); myRef....

Note: Let's setup some anonymous authentication for the example { "rules": { ".read": "auth != null", ".write": "auth != null" } } Once it is done, create a child by editing your database address. For example: https://your-proje...

How to implement Firebase Real-Time database in Android applications. Setup/Installation: First, install the Firebase SDK (guide) Register your project using the Firebase console After successfuly completing the two steps above, add the following dependency in your application level ...

System Requirements: Node JS Getting Started First Go to Firebase Console and Create New Project. After Creating the project, in project click on settings icon besides project Name in left sidebar and select Permissions. On Permissions Page Click on Service accounts in left sidebar then c...

The Same Database reference allows you to split a single database into multiple projects. This is useful for cases where a project is very large or where different teams manage different parts of the database. If you consider that you have two .sqlproj SSDT database projects with the following stru...

Create a new SSDT project Import 3rd party DB Build project to create a dacpac Reference dacpac in other projects

Hello friends before start code we have need to declare dependency for access firebase ui component, so here is the dependency which you can put it in your gradel other wise you can add dependency as jar also. compile 'com.firebaseui:firebase-ui-database:0.4.0' Then after we are querying in fire...

You can use django rest framework permission classes to check request headers and authenticate user requests Define your secret_key on project settings API_KEY_SECRET = 'secret_value' note: a good practice is to use environment variables to store this secret value. Define a permission ...

For this, we will use the function aggregate, which can be used as follows: aggregate(formula,function,data) The following code shows various ways of using the aggregate function. CODE: df = data.frame(group=c("Group 1","Group 1","Group 2","Group 2",&quo...