In which data model multiple parents can be possible? Network database model-The network model expands upon the hierarchical structure, allowing many-to-many relationships in a tree-like structure that allows multiple parents. What is a parent-child hierarchy? A parent-child hierarchy is a hierarchy with multiple levels that track the relationships within the hierarchy. For example, in a hierarchy that represents an organizational structure, you can have two levels: Manager and Employee. The Manager level is the parent level, and the Employee level is the child level. What is the difference between parent-child and level based hierarchy? Level-based hierarchies are those in which...

Does Emathhelp show steps? More than 2000 notes with clear explanations, and a lot of step-by-step examples. You can find topics ranging from adding whole numbers to solving quadratic equations, from limit of the function to optimization problems, from definition of integral to finding the volume of solids of revolution. What is 1st and 2nd derivative? While the first derivative can tell us if the function is increasing or decreasing, the second derivative. tells us if the first derivative is increasing or decreasing. Can TI-84 do derivatives? Summary: Your TI-83 or TI-84 can't differentiate in symbols, but it can find...