Maintaining deep hierarchical data in SQL Server 5. April 2015 Parakh SQL Server (0) Every development project in some way has to deal with hierarchical data. That comes in the form of catalogs, cascading choices etc. In my previous article I demonstrated a way to maintain simple 2 level hierarchical data. In this article I will demonstrated the most optimal way of storing deep hierarchical data, that cannot be efficiently maintained using key-value pair setup. The way to do this is by using a dedicated data type in SQL Server – HierarchyId. [More]
Simple way to maintain 2 level hierarchical data in SQL Server 23. March 2015 Parakh SQL Server (0) Often we are required to maintain simple 2 level hierarchical data in databases. Such data is generally used to power dropdowns, radio button groups, checkboxes etc. where user input is required. This data is generally persisted in relational databases in separate tables which connect to the tables of interest via one to many relationships.This method suggests a key-value like system to maintain such data, thereby reducing the total number of tables and at the same time maintaining flexibility to extend your data-model. [More]