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Database Development

A noob question about DB structure and storing changing data (like page views and updates) over time

I want to make a project for a friend… I am new to creating databases’ structures and learning on my own (any resources welcome). I have little experience with WordPress databases and I know how they store articles and stuff, but this is something new I have here… For simplification purposes I will compare my […]

Categories
Database Development

How to find the last data backup on secondary replica?

To determine when database has been backed up the last time usually is enough to look into backup tables in msdb database. However, it doesn’t work well with Availability Groups – after the failover new active replica doesn’t know when the last FULL\DIFF backup was taken because local msdb database doesn’t have those records. It […]

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Ask Chemistry

Which one is the stronger nucleophile? CH3CH2O or CH3CO2

Not really sure what the principle would be. Maybe it has something to do with the resonance capability of the two Os in CH3CO2

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Ask Chemistry

Predicting the structure

Today, while studying solid state I came across a question it says, suppose there is a cube and atoms are present on the A(corners,face centers) and B(edge centres) of the cube I just simply checked the contribution and tried to find the ratio between A and B which I got as 4:3 but I was […]

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Database Development

Is it good database design to store large hashes in your tables?

I have to produce a lot of graphs using a lot of historical data (1000+ data points for each graph), and depending on some pre-defined options, I need to display that specific data in a graph. Let’s say I have 4 possible combinations of options X and Y, (X,Y),(X,X),(Y,X),(Y,Y) If each of these combinations takes […]

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Linux Mastering Development

CentOS 7 disk usage analyzer always says home full?

The Disk Usage Analyzer tool on CentOS 7 always says that usage is at 100% for the /home dir. Even if I delete significantly large files from the offending directory, the usage remains reported at 100% (while the size shows GBs less of storage actually used). Eg. I first see… and [airflow@airflowetl ~]$ df -h […]

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Ask Biology

Question about Interpreting from IGV

Hello I am a complete beginner with zero knowledge of bioinformatics taking a class on it offered by my dept. I have a screenshot of my IGV of 5 genes that I used from human genome 38. I simply followed direction given from my class without understanding but I wanted to understand what the hell […]

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CMS Magento Mastering Development

MagentovariablePlugin is not defined

I’m adding wysiwyg editor in admin custom form All displays good and working fine, but when I click on Insert variable I have an error: Uncaught ReferenceError: MagentovariablePlugin is not defined at HTMLButtonElement.onclick Thanks.

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Linux Mastering Development Ubuntu

Fix snap application icon on 20.04 [gitkraken]

After downloading gitkraken from the website (not snap store) the launcher does not show any icon, also he same in the dock. I searched inside the snap directory /snap/bin/gitkraken but couldn’t see anything related to a desktop shortcut. Any ideas?

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Artificial Intelligence (AI) Mastering Development

Help improving my “read_excel” in python. My code reads slowly

My first question here so please bare with me. I’m trying to feed my neural network with training data read in from an excel file. It works perfectly fine when i have less than 50 rows in the sheet. But when i try with the real excel file containing almost 4.000 rows it suddenly takes […]