Document databases such as MongoDB garnered rapid and strong support from application developers for multiple reasons. But clearly, one of those reasons is the support for flexible schemas. In the ...

The migration should create all necessary tables in the specified schema (medusa), and the application should be able to access them correctly. Medusa tries to query tables in the medusa schema, but ...

If I want to query the columns of a relation the macro below does not contain the database but an empty pair of square brackets, which does not work for me. with mapping as ( select row_number() over ...

As companies look to update their databases, especially in a cloud-native context, with so many different databases out there, it’s a huge challenge for developers when migrating from one environment ...

In this paper, the authors are going to discuss about the importance of query in database, how helpful was it for retrieving data from database, and it is so complex while in relational database. In ...

Abstract: This paper proposes the semantic generalization. This generalization makes it possible for a shape graph, which corresponds to a relation schema in the relational data model, to have ...