define null valuesin some cases a certain entity
Define null values.
In some cases a certain entity may not have an applicable value for an attribute or if we do not know the value of an attribute for a certain entity. In these cases null value is used.
Expected delivery within 24 Hours
what are stored and derived attributesstored attributes the attributes keeps in a data base are known as stored attributesderived attributes the
q how does the excretory system of nematodes workthe metabolic residuals of nematodes are together by two longitudinal lateral excretory channels
what are composite attributescomposite attributes can be separated in to sub
q how is the nervous system of nematodes organized where are the neural chords located in their bodyroundworms have a ganglial nervous system with an
define null valuesin some cases a certain entity may not have an applicable value for an attribute or if we do not know the value of an attribute for
q what is the kind of reproduction that occurs in roundworms what usual feature do nematode sperm cells havenematodes reproduce sexually the nematode
q what are the major human diseases caused by roundwormsthe major human diseases caused by nematodes are ancylostomiasis ascariasis hookworm
explain roughness width and roughness width cut offroughness width - roughness width is the distance parallel to the normal surface between
define the terms i entity type ii entity setentity type an entity type describes a collection of entities that have the similar attributesentity set
1932155
Questions Asked
3,689
Active Tutors
1414540
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
Based on the chapter by Allen Furr on the sociology of mental illness, How do sociological models help you understand mental illness differently
Even though are coastlines are very vulnerable to multiple climate change impacts, the good news is that because most of our urban settlements
Question: Symbolic interactionism took off as a theoretical approach to the study of deviance during the 1960s
Multiple Choice Question Identify a true statement about political systems controlled by men. Multiple choice question.
Jane is doing a study about tattoos. She is interested in studying the idea of the "tramp stamp" (a tattoo in the small of a woman's back).
Question: Discover how the major schools of thought within sociology explain social stratification.
Question: In which of the following cases does female status tend to be highest? Group of answer choice