Question: What is referential integrity constraint in SQL ? With respect to referential integrity rules, what is an insertion and updation rule? Use some example illustrate

What is referential integrity constraint in SQL ? With respect to referential integrity rules, what is an insertion and updation rule? Use some example illustrate your answer.

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

Let r and s be solutions to the quadratic equation x 2 b x + c = 0. For n N, define d0 = 0 d1 = r s dn = b dn1 c dn2 (n 2) Prove that dn = r n s n for all n N. [4 marks] (b) Recall that a commutative...

Describe, in outline, each of the implicit surface, NURBS surface, and constructive solid geometry methods for defining three-dimensional shapes. (b) Compare and contrast the three methods. (a)...

s1 educated (SSE) student for every three public school educated (PSE) students. Reasoning that students are not very dissimilar from threads, he suggests the following entry and exit routines be...

1. Introduction to Computer Architecture concepts; The MIPS R2000 architecture allows for up to four external coprocessors. Our local systems arIPS external coprocessors are used by describing, in...

Physical database design decisions must be made carefully because of impacts on: a ) data accessibility b ) response times c ) security d ) all of them e ) none of them 2 - An attribute ( or...

4 Comparative Programming Languages illustrating your answer by explaining the meaning of the following fragment of code: [self isAwake] whileTrue: [| item | item := self askForCookie. (self...

Cascade) of enforcing each of the violated constraint. For example, say, if you have one violated (referential integrity) constraint, you write down maximum, the 5 different actions applying to this...

QUESTION 1 (a) Describe the main characteristics of the database approach and contrast it with the file-based approach. (b) The following records are saved in spreadsheet (see Figure 1). [4 marks]...

WL Question: You are given a tree T = (V, E) alongside an assigned root hub r V . The parent of any hub v 6 = r, signified p(v), is characterized to be the hub contiguous v in the way from r to v. By...

NPV and Discount Rates An investment has an installed cost of $827,450. The cash flows over the four-year life of the investment are projected to be $319,745, $304,172, $245,367, and $229,431. If the...

LMP Limited is a company founded by a group of marketing consultants. They had taken advantage of their clients career placement services, and thought they could offer additional supplemental...

Nissan Motors accepted an order for 10 units of Urvan Escapade on a job order cost system. Job 3-601 is assigned for this order. The following costs are incurred for the manufacture of the 10 unit:...

1 Frances Redi disproved spontaneous generation by designing a controlled experiment where he placed raw meat in six (6) jars. He covered three jars with a fine net and left three jars open. After a...

Par for n2 3. Select all what applies to the sequence (an}, from the following list. (Remember: if a 2 b then max {a, b} = a and min {a,b} = b) 00 35 (A) as = 45 32006 (B) a2006 = 42006 (C)...

You are a consultant hired by an established medium-sized manufacturing corporation with 250 employees. The corporation directly markets one unique product. The corporation is run by a new CEO and 11...

You are a consultant hired to advise ABC Limited on ROI and help with decision making for additional order. The company has provided you following information: The amount of division investment is...

hOtus diid follow-up Participants A sequence (a,}, satisfies a = 1, az= and 21 an = 16 max {a,-1, an-2} - min {an-1, an-2) for n 2 3. Select all what applies to the sequence (a,} from the following...

Question 3 0 ( 0 . 4 1 6 6 6 5 points ) Your bookkeeper collected $T 8 too much cash from a customer and recorded it . To correct the error, she should credit cash $ 7 8 . a ) True b ) False

Prove that, if R is in 3NF and every key is simple, then R is in BCNF. Explain

Define the following terms: relation schema, relational database schema, domain, attribute, attribute domain, relation instance, relation cardinality, and relation degree.

Suppose that duplicates are handled using the approach without overflow pages discussed in Section 10.7. Describe an algorithm to search for the left-most occurrence of a data entry with search key...

Front Row has the following selected balances at the February 28, 2020: The following information is not reflected in these balances: a. On February 28, 2020, Front Row accepted delivery of $5,325 of...

Rocky Mountain Products has a line-of-credit agreement with Norwest Bank that allows it to borrow up to $100,000 at any given time provided that Rocky Mountain's current assets always exceed its...

On December 10, 2019, Kool-Air Solutions agreed to manufacture and supply 800 refrigerators used by Vandelay Industries. Vandelay deposited $150 per unit upon signing the 3-year purchase agreement,...