Consider the following SQL statement: 'SELECT * FROM Employee E1, Employee E2 WHERE E1.managerId = E2.employeeId;'....
Consider the following SQL statement: 'SELECT * FROM Employee E1, Employee E2 WHERE E1.managerId = E2.employeeId;'. This SQL statement is most likely associated with ________.
Select one:
a. A 1:1 binary relationship
b. A N:M recursive relationship
c. A 1:N binary relationship
d. A 1:N recursive relationship
Homework Answers
`Hey,
Note: Brother if you have any queries related the answer please do comment. I would be very happy to resolve all your queries.
OPTION B IS CORRECT SINCE E1 AND E2 ARE RELATED TO DIFFERENT INSTANCES
Kindly revert for any queries
Thanks.
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Consider the following SQL statement: 'SELECT * FROM Employee
E1, Employee E2 WHERE E1.managerId = E2.employeeId;'....
Let R be a binary relationship between the entity sets E1 and E2. Consider the following...
Let R be a binary relationship between the entity sets E1 and E2. Consider the following instances for E1, E2, and R: E1 = {a1, a2, a3, a4, a5, a6} E2 = {b1, b2, b3, b4, b5, b6, b7} R = {(a1, b1), (a2, b1), (a3, b2), (a4, b4), (a5, b6), (a6, b6)} Draw the E/R diagram for E1, E2 and R indicating the strongest constraints (most restrictive) in terms of key and participation constraints you can define such that...
4 Consider the following relational schema, DDL statements and tables: EMPLOYEE( EmployeeID, EmployeeName, SupervisorID, DepartmentID) PROJECT...
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QUESTION 7 Consider the biochemical pathway A+E1 --> B+E2 --> C, where A, B, and Care...
QUESTION 7 Consider the biochemical pathway A+E1 --> B+E2 --> C, where A, B, and Care substrates and products and E1 and E2 are the enzymes that catalyze the reactions. Enzyme 1 (E1) can utilize only B as substrate. O only A as substrate. both A and B as substrates either A or B as substrate, but not both. neither A nor B as substrate.
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How would I write the SQL statement SELECT fname AS First_Name, lname AS Last_Name FROM employee WHERE salary BETWEEN 10000 AND 30000; in relational algebraic syntax?
Consider the following statement regarding Sn1, Sn2, E1, E2 reactions. To which mechanism(s), if any, apply?...
Consider the following statement regarding Sn1, Sn2, E1, E2 reactions. To which mechanism(s), if any, apply? 1.Rearrangements of the carbon skeleton are possible?
In the reaction below, what reaction will occur? OH Select one: o a. E1 b. E2...
In the reaction below, what reaction will occur? OH Select one: o a. E1 b. E2 c. no reaction d. SN2 e. not enough information f. SN1
Question 9 (1 point) Consider the following code: string sql = "Update Employee+ "set EName =...
Question 9 (1 point) Consider the following code: string sql = "Update Employee+ "set EName = "" + TextBox2.Text + " " Phone = " + TextBox3.Text + " + "Email = " + TextBox4.Text + " + "where ID = " + TextBox1.Text +! SqlDataSource 1.UpdateCommand = sql: SqlDataSource 1.Update(); This code will: O select a record modify a record insert a record delete a record
1.(1 pt. each) Consider the following statements regarding Syl, SN2, E1 and E2 reactions. To which...
1.(1 pt. each) Consider the following statements regarding Syl, SN2, E1 and E2 reactions. To which mechansims, if any, does each statement apply? If the statement can be applied to more than one mechanism, indicate each mechanism. SNI a) Involves a carbocation intermediate SNIEL b) Substitution at a stereocenter give predominantly a racemic product c) Rearrangements of the carbon skeleton are possible. EL SM d) Is greatly accelerated in protic solvents of increasing polarity SN e) Is first order in...
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suppose that we have a sample space s={E1,E2,E3,E4,E5,E6,E7}, where E1 to E7 denote the sample points. The following probability assignments apply: p(E1 )=.05 p(E2)=.20 P(E3)=.20 p(E4)=.25 p(E5)=.15 p(E6)=.10 and p(E7)=.05 Let A={E1,E4,E6} B={E2,E4,E7} C= {E2,E3,E5,E7} 1) Find A ∩ B and P(A ∩ B) and Are events A and C mutually exclusive?
What will the following SQL script return? /* SELECT* FROM EMPLOYEES WHERE TYPE = 'CASHIER' */...
What will the following SQL script return? /* SELECT* FROM EMPLOYEES WHERE TYPE = 'CASHIER' */ A It will return all rows and columns from the EMPLOYEES table. B It will return the CASHIER column for all rows in the EMPLOYEES TABLE. C It will return all rows and columns from the EMPLOYEES table where the TYPE column = "CASHIER". D It will return nothing.
QUESTION 7 Consider the biochemical pathway A+E1 --> B+E2 --> C, where A, B, and Care substrates and products and E1 and E2 are the enzymes that catalyze the reactions. Enzyme 1 (E1) can utilize only B as substrate. O only A as substrate. both A and B as substrates either A or B as substrate, but not both. neither A nor B as substrate.
In the reaction below, what reaction will occur? OH Select one: o a. E1 b. E2 c. no reaction d. SN2 e. not enough information f. SN1
Question 9 (1 point) Consider the following code: string sql = "Update Employee+ "set EName = "" + TextBox2.Text + " " Phone = " + TextBox3.Text + " + "Email = " + TextBox4.Text + " + "where ID = " + TextBox1.Text +! SqlDataSource 1.UpdateCommand = sql: SqlDataSource 1.Update(); This code will: O select a record modify a record insert a record delete a record
1.(1 pt. each) Consider the following statements regarding Syl, SN2, E1 and E2 reactions. To which mechansims, if any, does each statement apply? If the statement can be applied to more than one mechanism, indicate each mechanism. SNI a) Involves a carbocation intermediate SNIEL b) Substitution at a stereocenter give predominantly a racemic product c) Rearrangements of the carbon skeleton are possible. EL SM d) Is greatly accelerated in protic solvents of increasing polarity SN e) Is first order in...
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