DATABASE SYSTEM CONCEPTS LCPO
DATABASE SYSTEM CONCEPTS LCPO
7th Edition
ISBN: 9781265586577
Author: SILBERSCHATZ
Publisher: MCG
bartleby

Concept explainers

Expert Solution & Answer
Book Icon
Chapter 15, Problem 7PE

Explanation of Solution

Pseudocode:

Pseudocode for an iterator that implements indexed nested-loop join is as follows:

IndexedNL::open()

begin

    outer.open();

    inner.open();

    doner := false;

  if (outer.next () != false)

        move tuple from outer output buffer to tr;

    else

        doner := true;

end

IndexedNL::close()

begin

    outer.close();

    inner.close();

end

boolean IndexedNL::next()

begin

    while (!doner)

    begin

        if(inner.next(tr [JoinAttrs]) != false)

        begin

            move tuple from inner output buffer to ts;

            compute relation of tr an ts and place it in output buffer;

            return true;

        end

        else

            if(outer...

Blurred answer
Students have asked these similar questions
Don't use ai to answer I will report you answer
You can use Eclipse later for program verification after submission. 1. Create an abstract Animal class. Then, create a Cat class. Please implement all the methods and inheritance relations in the UML correctly: Animal name: String # Animal (name: String) + getName(): String + setName(name: String): void + toString(): String + makeSound(): void Cat breed : String age: int + Cat(name: String, breed: String, age: int) + getBreed(): String + getAge (): int + toString(): String + makeSound(): void 2. Create a public CatTest class with a main method. In the main method, create one Cat object and print the object using System.out.println(). Then, test makeSound() method. Your printing result must follow the example output: name: Coco, breed: Domestic short-haired, age: 3 Meow Meow
automata theory can please wright the exact language it know for example say  it knows strings start 0 and end with 1 this is as example also as regular expression
Knowledge Booster
Background pattern image
Computer Science
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Text book image
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Text book image
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
Text book image
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Text book image
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Text book image
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education