what is a super keya super key is a set of one or
What is a super key?
A super key is a set of one or more attributes that collectively permits us to recognize uniquely an entity in the entity set.
Expected delivery within 24 Hours
define the term domainfor each n every attribute there is a set of permitted values known as the domain of that
what is a candidate keyminimal super keys are known as candidate
what is a primary keyprimary key is chosen by the database designer as the principal means of identifying an entity in the entity
explain feed - cutting parameters1 in cylindrical grinding feed is the longitude movement of the work piece per revolutionffeed in mm per work piece
what is a super keya super key is a set of one or more attributes that collectively permits us to recognize uniquely an entity in the entity
define- relational algebrathe relational algebra is a procedural query language it having of a set of operations that take one or two relation as
what is a select operationthe select operation selects tuples that please a given predicate we use the lowercase letter sigma to denote
what is a project operationthe project operation is a unary operation that returns its argument relation with particular attributes left out
q is there respiratory pigment in the annelid bloodthe blood in beings of the phylum annelida contains the respiratory pigment hemoglobin the same
1930686
Questions Asked
3,689
Active Tutors
1418444
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
You notice that over the past month, many students on campus have started wearing a new style of school sweatshirt.
Question: What area of work or study do you hope to enter into after completing your undergraduate program?
Question: What is the main purpose of conducting experiments? Need Assignment Help? Group of answer choices
Hello all, My name is Shakeema; I am 33 years old. I have three children and two dogs. I am an animal lover and wish that I had room for many more animals!!!
Could answer the following question on Communicating with Family and Friends: 1. Describe four reasons that adults become friends
Problem: Write 2 goals for an IEP with 80% accuracy for the year and for each goal give 2 objectives using the following:
Q1. Describe four reasons that adults become friends. Q2. Identify the dimensions that make friendships different from one another.