Annotated Bibliography On Hierarchical Database - 3640 Words

Hierarchical Database Kind of database model which is designed in a hierarchy completely access to data beginning at the highest of hierarchical then changes to down such as customer to order. Also this system relation records together same a family tree that each record has just one owner. The hierarchical typical structure has levels which shows one –to – many also relationship between a parent and children divisions. The main key this models which following by each parent can have many children as well each child has simply one parent. This models most common if you compared with network and relational database because can be manage by huge amounts of data for difficult projects. Advantages †¢ Speed very efficiency †¢ Data†¦show more content†¦The application standard to use this kind of database is the structured query language (SQL) This statements are used for both communication with queries for information from a relational database this schema set of tables contain data built into predefined categories. Each table contains one or more data categories in columns, each row contains a unique instance of data for the categories