Clean the surface of your pond with a skimmer or algae net. 12. Vacuum the algae from the pond with a pond vacuum. 13. Place barley straw in a location that provides a good flow of water and sunlight. The barley straw will decompose adding hydrogen peroxide to the water, killing the algae.
SQL (Structured Query Language) SQL (Structured Query Language) is a standardized programming language used for managing relational databases and performing various operations on the data in them.
The scope of SQL includes data insert, query, update and delete, schema creation and modification, and data access control. Although SQL is often described as, and to a great extent is, a declarative language (4GL), it also includes procedural elements. SQL was one of the first commercial languages for Edgar F. Codd's relational model, as described in his influential 1970 paper, A Relational Model of Data for Large Shared Data Banks..