19. What is an indexPath?
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A: It is an iterative design process. In UCD designers focus on the users and their needs in each phase…
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A: Explain the technics that are used in data modeling in designing a system. Data modeling is the…
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A: Here in this question we have asked about tuple in database.
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Q: When and why do ict's benefits and drawbacks become apparent to the public?
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A: We meed to discuss the developments in wireless security during 3 decades.
19. What is an indexPath?
20. What are the properties of an idexpath object?
21. How does a table cell reusability concept work?
22. What is NSFIleManager What does insertNewObjectForEntity:
inMagedObjectCntext; do?
23. What is NSUserDefaults?
24. Different between Core Data and Sqlite
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- 1. What are the three stages during the startup of an Oracle database? If a copy of the control file is corrupted, which stage of the startup would fail? Briefly explains why. 2. What are the SQL statements to perform the following tasks? Create a smallfile tablespace Hw2Tbs that contains a 32MB datafile in the directory C:\app\abc\oradata\csc544744\myData Add another 8MB to tablespace Hw2TbsDefintion: What is the purpose of a database audit log? SQL Server uses Extended Events in a way that can be summarised in less than 60 words?Which of the following are true about primary keys? SELECT ALL THAT APPLY. A) They must reference one or more columns in a single table. B) They are usually implemented using an index. C) They guarantee that no two rows in a table have duplicate primary key values. D) They must be defined for every database table.
- You have a frequent itemset I={football, cricket, swimming, climbing} that contains 4 items. What does it mean when you say that I is a maximal itemset? a. There is no other frequent itemset for the given dataset b. a) There is no superset of I that is a frequent itemset c. The set {cricket, swimming, climbing} is not frequent d. All frequent itemsets have 4 items Look at the command for the Document Database below. What does it do? db.superheroes.insert{ { collection: “people”, forename: “Bruce”, surname: “Banner”, age: 40 } }; a. It deletes a record for Bruce Banner b. a) It inserts a record for Bruce Banner in the collection superheroes c. It inserts the record for Bruce Banner in the collection people d. It creates a new collection for Bruce Banner in the collection people1) What is an example of SQL injection? Group of answer choices A malicious user alters the query string to display sensitive data User input is used to dynamically alter a SQL statement A virus that deletes all data in the database Website that uses SQL statements to display content 2) What regex matches the string "How was your day?"? Group of answer choices /[0-9]*\?$/ /\w+[yz]?/ /[0+9].\?$/ /day\?\$/ 3) A cryptographic hash function is used to _____. Group of answer choices convert passwords into hashes set up third party authentication for added security decrypt passwords when users get locked out of their accounts email a reminder to users who forgot their password 4) With which mode is the fopen() function called to overwrite an existing file? Group of answer choices r o a w 5) Why are sessions preferred over cookies? Group of answer choices Programming sessions is less complicated than cookies Session variables require fewer memory…Given the code below, what would be the answers for the following questions: 1. In which method is the call to the database being executed? 2. What is the name of the database this is being accessed? 3. What is the name of the database table being accessed? 4. Which column is being retrieved from the database table? import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.*;import java.io.IOException;import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Statement;import java.util.Scanner;public class guiDBExample extends JFrame implements ActionListener { String inputNumber; int sqlNumber; String partName = null; String partDescription = null; String partPrice = null; JTextField name; JTextField number; public guiDBExample() { buildGUI(); } public final void buildGUI() { JPanel panel1 = new JPanel(); JPanel panel2 =…
- What are the four basic types of operations for a database application? a. Insert, Select, Update, and Delete b. Insert, Update, Delete, and Create c. Insert, Update, Delete, and Render d. Insert, Select, Update, and Render If stringa="Good Morning", what is the value of stringa[1:5]? a. "Good " b. "ood " c. "Good" d. "ood M" The instance that “a survey respondent in service occupation (x) is less likely to report income ” is an example of __________ . a. Missing completely at random. b. Missing at random. c. Missing not at random. d. None of the above.To create a plugin, should one create new post types or new database tables?The development of TPS (Transaction Processing System) using Android Studio. The SQLite database browser successfully displays the records, however, the list view activities do not appear?
- what is the role of quesry processor in the database system architecture? a) It send result back to the application that requested the quires b) It translates instruction into file system commands c) It writes log records before applying changes to the database d) It uses information from the catelog to perform query optimization.Create a library database that includes two tables, one for books and the other for accounts, and create a relationship between them.Select records from MySQL database using PHPInsert records into MySQL database using PHPUpdate records into MySQL database using PHPDelete records into MySQL database using PHPConsider the following PL/SQL script: SET SERVEROUTPUT ON BEGIN INSERT INTO COURSE (course_no, description, created_by, created-date, modified_by, modified_date) VALUES (course_no_seq.nextval, ‘database development’, USER, SYSDATE); COMMIT DBMS_OUTPUT.PUT_LINE (‘One course has been added’); END; Assumptions: All the COURSE table fields have check constraints defined on them indicating that none can be null. Explain why the script does not execute successfully. Add a user-defined exception to the script, so that the error generated by the INSERT statement is handled. Assign the code 2290 to this exception.