A Use Case of Data Lake Metadata Management

This chapter presents a use case of data lake metadata management, applied to the health‐care field, which is particularly known by its heterogeneous sources of data. It also presents an overview of related work on this field by largely referring to articles in subject fields like data warehouses and Big Data. The chapter presents a list of metadata attributes dedicated to the entire lifecycle of data in different zones of a data lake, relative to data lake architecture. It then proposes a classification of intra‐ and inter‐metadata. These metadata are modelled through a conceptual model in order to implement it in a metadata management system. The chapter provides an implementation of the conceptual model which concerns two database management systems (DBMSs) (one relational database and one NoSQL database). It compares relational DBMS with graph DBMS in terms of scalability, performance, flexibility, query language and security.