it's not about being the best it's about being better than yesterday
Consider we have a model student when we access data from this using the following command. The variable student contains the data of a student. Each student has enrolled in many courses, which is another model. On printing the student, we get the following data Consider if I update the course model, The expected behavior…
The database is used to store data and help us to query complex queries. As time passes every table becomes heavy the number of rows a particular table will increase. This will lead to a slow response of queried data. Indexing addresses this problem, what essentially an index does is sort the data in such…
Recently I have been introduced to ruby, while working on the project I saw this function is been used many times in our existing codebase. Let’s discuss what problem it solves. Consider you want to call a list of functions dynamically, eg. Consider an interaction to list animals data which takes the animal name as…
ACID is the acronym for four relational database properties know as Atomicity, Consistency, Isolation, and Durability. Relational Databases provide these features and we will see why these features are needed and what they are. What is Transaction in database? The transaction is a collection of SQL statements that act as a single. Consider this transaction….
Over the years, there were many competing approaches to data storage and querying. The oldest and best-known database is a relational database, where the data is organized into relations called a table. To overcome the drawbacks of Relational Database like scalability, a document model database is introduced the term NoSql got famous. The term NoSQL…
A database is a collection of data, arranged in such a way that you can access and manage it easily. The database is vast topic concepts like index, ACID, CAP theorem, types of databases, normalization, Sharding, Consistency, MapReduce, Eventual Consistency is some of the interesting topics in this field. This blog will be a series…
In Java,we use these keywords in our development all the time and somehow never realize in which situation we get a compile error until the intellisense prompts us or when we are asked question in interview about it.So let’s see both the keywords in detail. Final keyword can be applied to a 1.A class 2.A…
This post is about my journey with android development and how I learned and how you can learn at least to develop basic android apps. What gets me started is this course of udacity. This is a free course from google team best suited for beginners I learned the entire basics from here. This course…
A few days back, while reviewing a PR of one of my colleagues I saw there were around 9-10 migration files of which 2 were of new table addition and the remaining were column addition to the table. Ideally, this should not happen but this is not an ideal world, we may forget to include…
Have you encountered a codebase where a single class/module doing so many things and any small change in a module breaks another and you think to yourself how this happened, if only you knew how to prevent this in the first place? Or a case when a senior developer reviews your PR and says move…