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The Live Database Pipeline

Evolutionary Database Design is a slightly counterintuitive approach to managing a database. On the one hand, we think of our databases as towers that we must defend from any old change and must deploy to carefully. On the other hand, if we can get very good at deploying incremental changes to a database, and keeping track of them, then we ...

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How to Install Maria DB, create Database and Execute Queries

Hello Friends, In this tutorial,we will see : 1. How to Install Maria DB2. How to connect to Maria DB,Create Database and Execute Queries 1. How to Install Maria DB 1.1 Go to following link and click on “Download 10.4.12 Stable Now!” button.As of writing this post,latest stable release of Maria DB is 10.4.12.Please check for latest stable release when you  ...

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Apache Derby Database JVM Security Policy

java-interview-questions-answers

Abstract I have already posted a number of blogs about Derby: Derby Database BackupMultiple Derby Network Servers on the same HostApache Derby Database Users and PermissionsIntegration Testing with Maven and an In-Memory Derby Database This wasn’t intended to be a series. But over the years I’ve been using Derby more and more. I started using Derby as my database of ...

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Reactive Relational Database Transactions

spring-interview-questions-answers

Spring Framework announced recently to ship with support for reactive transaction management.Let’s take an in-depth look at how this works for R2DBC, the reactive specification for SQL database access. Transaction Management is a pattern and not technology-specific. From that perspective, its properties and runtime behavior are a function of the implementing technology. TL; DR: From a database perspective, imperative and ...

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NoSql Databases: Cassandra vs Mongo vs Redis DB Comparison

java-interview-questions-answers

1. What are NoSql Databases? NoSql (Not only Sql) databases are non-relational databases that are horizontally scalable, persist semi or unstructured data and have flexible schemas. These databases support multiple data models such as key-value, document, column-family, graph based, in-memory etc. for managing and accessing data. NoSql databases are best suited for building modern applications, which require large data and ...

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Understanding H2 InMemory Database with Spring Boot

spring-interview-questions-answers

Introduction Basically the database setup involves several steps before we can use it through configured datasource in our application. This actually is required in case of actual project implementations. However, there are situations where we just need a POC to be done for something, and the whole database setup thing still becomes an obligation. Similarly, for unit tests, it would ...

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Derby Database Backup

java-interview-questions-answers

Abstract I have already posted a number of blogs about Derby: Multiple Derby Network Servers on the same Host Apache Derby Database Users and Permissions Integration Testing with Maven and an In-Memory Derby Database This wasn’t intended to be a series. But over the years I’ve been using Derby more and more. Recently, I started using Derby as my database ...

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