Sentence examples for a very challenging issue from inspiring English sources

However, security remains a very challenging issue even in NoSQL database as security challenges that were inherent in the previous databases have not spared even NoSQL.

"I am optimistic about the future but it's true that this is a very challenging issue".

Indeed, tracking epidemic disease is a very challenging issue.

Multiphase flow measurement is a very challenging issue in process industry.

Clearly, establishing trust among network nodes in a MANET remains a very challenging issue.

The design of sustainable wireless sensor networks (WSNs) is a very challenging issue.

Underwater communication is a very challenging topic.

Interoperability is a very challenging topic.

It's a very important but also very challenging issue [of] aligning the needs of biodiversity conservation with the needs of human and community development.

We are beginning to have a tremendous impact on the very challenging issue of malnutrition facing two billion people in the world.

Device reliabilities such as switching uniformity, endurance, and data retention under a few microamperes are very challenging issues.