A tuple is a fixed fixed-length list containing elements that need not have the same type. It can be, and often is, used as a key-value pair. A row (sometimes called a record) is the set of fields within a table that are relevant to a specific entity.
The stem wall on a concrete foundation is essentially the supporting wall that joins the foundation of a building to the vertical walls of the structure that is constructed atop the foundation.
Sea wall is the structure that is built parallel to the shore that shields the coast from breaking waves. The sea walls are created to stop the brute force of the incoming waves that can destroy any structure in its path. The buildings near the shoreline would also get damaged if there were no sea walls. Comments.