Agile SPL syntax enables much more convenient programming. The open-source data processing component can be seamlessly integrated into a Java application. As microservices get popular, there are and will be more and more applications developed based on the microservices framework. To accomplish data processing tasks within microservices conveniently and efficiently…

What kind of code is considered low？ The term “Low-Code” has become popular in the past years, springing into existence a number of corresponding entrepreneurial teams. We only knew there were long codes and short codes before, only now do we know there are still high and low codes. Intuitively, the so-called low code is to make…

As a programming language, the opensource SPL is a better alternative to SQL for database calculation. The objective of database language To clarify this objective, we need to first understand what the database does. When it comes to database, it always makes people think that it is primarily for storage…

SQL syntax is close to natural language, with low learning threshold and the bonus of first mover advantage, it soon became popular between database manufacturers and users. After years of development, SQL has become the most widely used and most mature structured data computing language. However, SQL must work based…

For a long time, Java has provided built-in implementations of SAX and DOM, and no external libraries are required to parse XML. To simplify the XML processing requirements, advanced declarative languages such as XQuery and XPath came into being, which can meet the XML conditional query requirements, but the conditional…

The relational database data model is simple, and they are all single-level two-dimensional tables with clear rows and columns. It is relatively simple to use SQL. In MongoDB, there is a multi-level nested structure. The attribute fields appear arbitrarily, and it is not easy to describe which field information of…

One of the biggest differences between SQL and NoSQL databases is JOIN. Although MongoDB introduced $lookup as a supplement to the use of relational data in NoSQL databases, even if it is a simple two-table association, $lookup needs to be replaced with complex aggregate queries. The actual application environment is…

There are many JSON libraries available in Java. Most open-source packages completely deserialize JSON into Java objects and then access the property values of interest in the objects, such as Jackson, GSON, Genson, FastJson, and org.json. There is also a type of JSON library, such as JsonPATH. Java calls a…

MongoDB does not support SQL functions. The existing open-source MongoDB JDBC driver works on the principle that SQL queries are verified and converted to MongoDB queries and then executed by calling MongoDB Java API, which provides translation tools and services from SQL to MongoDB query language. In MongoDB, there is…