Discover and read the best of Twitter Threads about #database

Most recents (24)

What is PostgreSQL?

PostgreSQL (aka Postgres) is one of the most popular relational database-backed by more than 30 years of open source development.

#Database #dbms #SQL #PostgreSQL
For history lovers, Postgres was started in 1986. The initial name Postgres was later changed to PostgreSQL to reflect the clear support for SQL in 1996.

PostgreSQL supports a number of features, data types, ability to write functions in different languages, a robust RBAC and support for JSON data storage for NoSQL like ability.

Read 10 tweets
H1B1 Salary Database

The U.S. Department of Labor's official database, which contains information on the annual income of employees who came to work in the U.S. on H1B1 visas

#osint #database
Positions even remotely related to #osint are quite few. But you can find something related to intelligence in general. And, of course, there are many positions for analysts of various profiles.
The highest paying positions among H1B1 visa holders are in the medical field. In first place is a neurosurgeon with an average salary (data from more than 100 fillings) of $612,080…
Read 5 tweets
#buildinpublic #automation #startups

At the request of @alistairswilson, here is my present #OpenSource Tech Stack!

Many of these are #Nocode/#Lowcode tools that make your life a lot easier.

So grab a cup of coffee & settle into:

Top 20 Solutions in My Tech Stack
🧵 👇
1. n8n (#Automation)
What it is: Connects different systems together and automates the tasks.

How I use it: How don't I use it?! Automated emails. Hardware Endpoint. API creation. System monitor.

Twitter: @n8n_io
2. Bitwarden (#Password Safe, #Security)
What it is: Safely stores & remembers your passwords so you don't have to.

How I use it: I have over 2000 username & password pairs. This remembers the very long passwords I create!

Twitter: @Bitwarden
Read 22 tweets
1/8 AWS Aurora Security 🧵👇

🎨 Content Creator: @jerry__chang

#AWS #Database #PostgreSQL #MySQL
2/8 Isolate the resources from the internet (not publicly accessible)
3/8 Leverage security groups to control network traffic for the individual resources.
Read 8 tweets
#Impfstoff“-Chargen-LOTTO: Mit etwas Pech gewinnst Du eine #Charge m. bis zu 3000x #Toxizität mit vielen #Hospitalisierungen/#Todesfälle|n… 70-80% Chargen sind clean, 1 von etwa 200 aber FATAL! Nachvollziehbar bewiesen durch BigData-Auswertungen von VAERS/Chargen-Nr./Meldungen. ImageImage
#MikeYeadon (Ex-head Research #Pfizer): „Turning to your discoveries from smart analyses of batches in VAERS, the descending series of batches/adverse events for the Pfizer #vaccine is without doubt the most frightening & disturbing figure I’ve ever seen. …patterns have meaning“
#VAERS database provided the batches in time sequence, and has records of all the #adversereactions associated with each batch. So it was a simple task to create a graph showing how #toxicity of the #batches varied with time over the entire year of #2021.
Read 6 tweets
Applications of computer programming languages

#programming #SSOT #Python #Java #javascript

Web and Internet Development,Scientific and Numeric applications, Desktop GUIs, Business applications. It is widely used in AI and Machine Learning space.
Mostly used for developing Android apps, web apps, and Big data
Read 12 tweets
Daily Bookmarks to GAVNet 06/24/2021…
Changes in farming practices could reduce greenhouse gas emissions by 70% by 2036…

#FarmingPractices #greenhouse #GasEmissions #reduction
Mindat: The Wikipedia for Minerologists, Miners, and “Rock Hounds” (Except Not)…

#minerals #database
Read 10 tweets
I had attended a webinar recently and learnt something incredibly unique! I discovered that you could be a Data Scientist, but having a #specialisation is IMPORTANT!

What is a "specialisation"? How many kinds of specialisations are there in #DataScience Domain?

Thread🧵 Image
One can acquire all the skills of a Data Scientist, but having specialisation in a particular skill can set you apart from the rest. It can be anything! You can analyse data as no one else; data visualisation or database management (#DBMS) could be your niche.🤩
☑️Data Visualisation
If you have a knack for producing beautiful graphical representations from the data, this could be your domain of specialisation, and you could become a Data #Visualisation Engineer. Image
Read 10 tweets
Daily Bookmarks to GAVNet 04/11/2021…
Device sketches objects 200 kilometres away, one photon at a time…

#RemoteSensingDevices #HighFidelityImagery #lidar
An open-access database of infectious disease transmission trees to explore superspreader epidemiology…

#database #infectiousDisease #TransmissionTrees #superspreader #epidemiology
Read 10 tweets
Lately I have been talking to some students and friends about various places to look for academic positions. Because there is no ONE-FOR-ALL space to find opportunities, here is a thread summarizing the ones I know of 1/34 #AcademicTwitter #phdchat #phd #internationalPhD
Having said that, I must emphasize that this #database is skewed towards #Asians and #Indians (and other #internationals) to study in #EU #UK or #USA in general and is certainly not exhaustive. I have no info. on #NSF grants for example or grants within India. 2/34
Most importantly, I’m hoping this thread helps #colouredwomeninSTEM & #WomeninSTEM, please feel free to RT. And as a #biologist, I am more aware of databases in #ecology, #wildlife, #evolution and #conservation circles, feel free to add more and share. Let’s dive right in! 3/34
Read 34 tweets
Important to keep in mind that #AI is made by humans. Our flaws and biases get encoded and amplified. We need the right diversity of people at the table to design and implement #ArtificialIntelliegence and #ML. #humancentereddesign for all of humanity. #design
Who determines definitions, labels of #data cut offs? Too often we get all nerdy on which variables & factors in the model. But are we even using the right data? #tech #technology types might consider reading Maya Angelou & Toni Morrison and others to think outside the box
Example: many people are interested in #SDoH #socialdeterminantsofhealth & #data for it.
Who has existing large #databases?
Banks are traditionally risk averse, block/exclude those who are labeled high risk
So can their data improve health equity?…
Read 5 tweets
Types of SQL Commands : A Thread


Do check and Retweet if it is helpful

#kaliyona #sql #teamkaliyona #sqlcommands #database #oracle
There are 5 types of SQL Commands
1. DDL: Data Definition Language
2. DQL: Data Query Language
3. DML: Data Manipulation Language
4. DCL: Data Control Language
5. TCL: Transaction Control Language

#sql #kaliyona
DDL commands are used to define the Database (DB) objects.
CREATE: Used to Create DB Objects.
DROP: Used to Delete DB Objects.
ALTER: Used to alter the structure of DB Objects.
RENAME: Used to Rename existing object.
TRUNCATE: Used to Remove all the records from a table.

Read 9 tweets

SQL(stands for Structured Query Language)is the popular query language to manage databases. So, here is a collection of the most asked SQL interview questions to help you prepare

Please Like & Retweet

🧵A Thread 🧵

#SQL #Coding
What is Database?

A database is an organized collection of data, stored and retrieved digitally from a remote or local computer system. Databases can be vast and complex, and such databases are developed using fixed design and modeling approaches.

#100DaysOfCode #SQL #Coding
What is DBMS?

DBMS stands for Database Management System. DBMS is a system software responsible for the creation, retrieval, updating, and management of the database.

#100DaysOfCode #SQL #Coding
Read 24 tweets
1/ This excellent study by @aaronmring/@VirusesImmunity and team found that COVID-19 patients exhibit dramatic increases in the production of antibodies against thousands of human extracellular and secreted proteins (the exoproteome) compared to controls 👇
2/ The million dollar question is: what molecular mechanisms underly this antibody/#autoantibody production? It is worth interpreting the findings via the lens of human #microbiome/#virome activity + the activity of persistent pathogens (such as EBV) harbored by study subjects.
3/ Every study subject harbored extensive microbiome/virome communities comprised of trillions of organisms during #COVID-19 infection…with such ecosystems now understood to persist beyond just the gut but also in other body sites (#lung, liver etc).
Read 15 tweets
Saat ini CCTV menjadi alat yang penting dalam #melindungi #keamanan publik. #CCTV semakin banyak digunakan oleh banyak negara untuk sektor riskan, seperti pemantauan bank, kontrol ritel dan deteksi #kejahatan, namun CCTV juga punya dampak positif dan negatif.

📽: WP
Misalnya, jumlah #CCTV di #Inggris diperkirakan berkisar antara 3 hingga 6 juta unit, tersebar di jalan raya, tempat parkir, toko, rumah sakit, bandara, stasiun kereta api. Yang mereka gunakan untuk menekan jumlah #kriminalitas

#cctvfootage #security #kriminal
Bahkan ada laporan terbaru yang menunjukkan bahwa 54 persen dari 770 juta kamera #CCTV dunia terletak di #China, yang berarti ada sekitar 415,8 juta unit yang berlokasi di negara tersebut.

#cctvfootage #surveillance #privacy
Read 13 tweets
Excited for my first re:Invent and getting ready for the @ajassy keynote coming up!

#awsreinvent #AWS #cloud
Loving the opening music act 🎸
Zach Person is the musician playing, so awesome...

Here is his Instagram -
Read 75 tweets
Yesterday one of my colleagues asked me about how to boost MongoDB performance.
I explained to him, and now it's worth sharing:

Performance tuning for #MongoDB :

1. Create custom indexes for your queries.

Thread 👇

#javascript #Nodejs
2. If you use mongoose always use "lean", by default mongoose queries return an instance of Mongoose Document class, and these are much heavier than vanilla javascript objects.

#javascript #Database #MongoDB #NoSQL
3. Reuse connections (Connect once, use multiple times):

Don't connect and disconnect DB every time you query something. You should connect once,
at the beginning of your app.

Setting up a new TCP Connection is expensive time-wise, memory, and network wise.
Read 7 tweets
What are some database engines that works great with serverless architecture?

#database #CodeNewbie #Serverless #javascript
Note to Self: MongoDB can be used with serverless functions by caching the initial connection.
database engines were designed much before the serverless architecture was a thing.

a connection to the database is always persistent. meaning, it lasts for a really long time.
also, there is a limit(imposed by DBaaS provider) on how many connections a database can have at any given timestamp.

a lambda function is invoked every time a client(generally, browsers) creates a connection. this means a new connection to the database as well.
Read 6 tweets
Well where do I start with this one!

#Article from #TheLiverpoolVermin who are just as #bad as the #TheScum

🤬#Police #drag man off #Merseyrail #train in #handcuffs after he '#refuses to #wear #mask'🤬…
I've #watched the #video many times in #shock & #horror at the #actions from the #police #FORCE & I've read both #articles #TheLiverpoolVermin & #BritishTransportPoliceFederations #Statement

Something not quite right none of it adds up, the video shows the #Police ARE #Lying🤬
Read 14 tweets
Yesterday I had to work on a backfill script to update 24 Million records of payments. Yes, you read right, 24 million. The script ran for 3 hours and wasn´t even at half.

We found several ways to improve its performance today.
Summary below 👇

#SQL #Database
The first thing was to be able to check performance to make sure we were improving it. So, a sample size of 20k records updates instead of 24 million.

Original query took around 36 seconds. We ended up making this take only 6 seconds, and I think we can´t improve it more now.
1_ Removed an unnecessary join table. We were updating based on a list of descriptions values joined instead of using direct codes. Easier to read by humans, slower for computers. We are at 32 seconds now.
Read 7 tweets
Daily Bookmarks to GAVNet 08/12/2020…
How FiveThirtyEight’s 2020 Presidential Forecast Works — And What’s Different Because Of COVID-19…

#elections #forecasting #COVID19
Tracking the Real Coronavirus Death Toll in the United States…

#COVID19 #DeathToll #tracking #usa
Read 7 tweets
The GROUP BY clause groups a set of rows into a set of summary rows by values of columns or expressions.

The GROUP BY clause returns one row for each group. In other words, it reduces the number of rows in the result set.
We often use the GROUP BY clause with aggregate functions such as SUM, AVG, MAX, MIN, and COUNT.

The aggregate function that appears in the SELECT clause provides information about each group.
Read 6 tweets
Motivation Time-out with Damilola Abodunrin (Transparency).

Theme for June:
Speak it right, Light it up Episode 10
Subtheme for the week:
Wrapping up the June series.

Watch using any of the links below:


Background Instrumental: Ayo by @tope_alabi_ ft @TYBELLO

Thanks to my awesome team:
Content developing and harmonizing : God Almighty, @F_Feyikemi, @bsosherifdeen

#monday #mondaywisdom #mondaymotivation #mondaymood #motivationalvideos #motivation
#word #reality

Read 3 tweets

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