Useful tips for everyday
How do you set foreign key for composite primary key? A referential constraint must have a one-to-one relationship between referencing and referenced columns. In other…
How do you handle SQL queries? There are three approaches you can take: Use stored procedures. Keep the queries in the code (but put all…
Can we specify the order of execution of trigger? Triggers don’t have a specified execution order. For example when we insert rows in a table…
Can you add an author after publication? If an author needs to be added after publication, a corrigendum needs to be submitted by the authors.…
How to cluster distance clustering data in R? I can never remember the names or relevant packages though. See the R-spatial Task View for clues.…
Can you convert data to ordinal data? You can convert ratio data to interval, ordinal, or nominal data. You cannotconvert nominal data to ordinal, interval,…
How can you increase the accuracy of convolutional neural network? To improve CNN model performance, we can tune parameters like epochs, learning rate etc….. Train…
Can missing values be found using clustering? Missing values can complicate the application of clustering algorithms, whose goals are to group points based on some…
How do I create multiple columns in a data frame? Create a dataframe with pandas. Let’s create a dataframe with pandas: import pandas as pd…
What is a cumulative frequency distribution? A cumulative frequency distribution is a summary of a set of data showing the frequency (or number) of items…