2. The C- code is given to you3. if fp= fopen ( filename, r ))printf( "Error. Cannot read from file $s. Exit\n",NULL ) {==4.5.filename ;6.exit 1 );7. }8.9. while fgets (line, sizeof line, fp) != NULL ) {10. printf("Successfully copied");11.}12. fclose fp );Write down how many systems call this program invoke? Explain what type of system call itis.

Step 1: if ( { fp = fopen ( filename, r ) ) == NULL ) {f ( "Error. Cannot read from file ss.…

Answered: = fope REinti( "Erron filen exiE1 );…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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> > ©Citizen ©Company model model • licenseNo: String e location: String expiryDate: Date Company(int, String,String,String,Date) • getLicenseNo() String • setLicenseNo(String).void • getLocation() String • setlocation(String) void • getExpiryDate().Date • setExpiryDate(Date).void • toString() String nationalNo: int - bDate: Date nationality: String FCitizen(int,String,int,Date,String) • getNationalNo() int • setNationalNo(it) void • getbDate():Date • setbDate(Date):void • getNationality() String • setNationality(String) void toString() String > ©Customer model -bookings • book • cance id: int name: String FCustomer(int,String) • removeBookedObject(int).void • getBookings() ArrayList • setBookings(ArrayList)void • getid()int • setid(int).void • getName():String • setName(String) void • getTotalPayment() double toString() String -booki -customers <
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/** * Removes the specified key and its associated value from this symbol table * (if the key is in this symbol table). Takes advantage of the fact that the * keys appear in increasing order to terminate` early when possible. * * @param key the key * @throws IllegalArgumentException if {@code key} is {@code null} */ public void delete(Key key) { // TODO // Change this code to make use of the fact that the list is sorted to // terminate early when possible. // As this code already uses recursion, the private helper function is // already present below, but it will need to be changed to terminate // early when appropriate. if (key == null) throw new IllegalArgumentException("argument to delete() is null"); first = delete(first, key); } // delete key in linked list beginning at Node x // warning: function call stack too large if table is large private Node delete(Node x, Key…
// Declare data fields: a String named customerName, // an int named numItems, and // a double named totalCost.// Your code here... // Implement the default contructor.// Set the value of customerName to "no name"// and use zero for the other data fields.// Your code here... // Implement the overloaded constructor that// passes new values to all data fields.// Your code here... // Implement method getTotalCost to return the totalCost.// Your code here... // Implement method buyItem.//// Adds itemCost to the total cost and increments// (adds 1 to) the number of items in the cart.//// Parameter: a double itemCost indicating the cost of the item.public void buyItem(double itemCost){// Your code here... }// Implement method applyCoupon.//// Apply a coupon to the total cost of the cart.// - Normal coupon: the unit discount is subtracted ONCE// from the total cost.// - Bonus coupon: the unit discount is subtracted TWICE// from the total cost.// - HOWEVER, a bonus coupon only applies if the…
help me java web (Can you guide the solution?) 1)file db DbContext public class DBContext { protected Connection connection; public DBContext() { try { String user = "sa"; String pass = "123456789"; String url = "jdbc:sqlserver://MSI:1433;databaseName=MyOrder"; Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver"); connection = DriverManager.getConnection(url, user, pass); } catch (ClassNotFoundException | SQLException ex) { Logger.getLogger(DBContext.class.getName()).log(Level.SEVERE, null, ex); } } } 2)public class DBContext1 { public Connection getConnection()throws Exception { String url = "jdbc:sqlserver://"+serverName+":"+portNumber +";databaseName="+dbName; Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver"); return DriverManager.getConnection(url, userID, password); } private final String serverName =…
Develop an application to Display the contacts. Store 5 contacts (image, name and mobile number for each contact) and display the information as follows. The application should output the contact's image, name and mobile number. Use recycler view to implement the application. Contact1 978123 Contact2 12345 Contact3 23456 Contact4 45643 Contact5 43256 Contact6 65655 Write the required Java codes for the application MainActivity, implementation of RecyclerView adapter class and Data class.
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Background Often, data are stored in a very compact but not human-friendly way. Think of how dishes in a menu can be stored in a restaurant database somewhere in the cloud. One way a dish object can be stored is this: { "name": "Margherita", "calories": 800, "price": 18.90, "is_vegetarian": "yes", "spicy_level": 2 } Obviously, this format is not user-readable, so the restaurant's frontend team produced many lines of code to render and display this content in a way that's more understandable to us, the restaurant users. We have a mini-version of the same task coming up. Given a list of similar complex objects (represented by Python dictionaries), display them in a user-friendly way that we'll define in these instructions. What is a "dish"? In this project, one dish item is a dictionary object that is guaranteed to have the following keys: "name": a string that stores the dish's name. "calories": an integer representing the calorie intake for one serving of the dish. "price": a float to…
Challenge 3: Vehicle.java, Automobile.java, Tank.java, Truck.java, Car.java, and TestVehicle.java Implement the classes that are given in the class diagram. Also implement a TestVehicle class where you will create three objects and execute their toString() methods. >> Automobile assignment2 a licensePlate: String make: String Automobile() Automobile(int,double, String, String) getLicensePlate(): String setLicense Plate(String):void ●getMake(): String setMake(String):void .toString(): String >> Ⓒ Truck assignment2 a towCapacity: double Truck() Truck(int, double, String, String, double) getTowCapacity():double setTowCapacity (double):void toString(): String Sample output > Vehicle assignment2 □ year: int weight: double Vehicle() Vehicle(int, double) getYear(): int setYear(int):void getWeight():double setWeight(double):void .toString(): String > Car assignment2 a maxPassengers: int Car() Car(int,double, String, String,int) getMaxPassengers() int setMaxPassengers (int):void toString():…
* Removes the specified key and its associated value from this symbol table * (if the key is in this symbol table). Takes advantage of the fact that the * keys appear in increasing order to terminate` early when possible. * * @param key the key * @throws IllegalArgumentException if {@code key} is {@code null} */ public void delete(Key key) { // TODO // Change this code to make use of the fact that the list is sorted to // terminate early when possible. // Also use a loop instead of recursion! So remove the recursive helper // function below. if (key == null) throw new IllegalArgumentException("argument to delete() is null"); first = delete(first, key); } // delete key in linked list beginning at Node x // warning: function call stack too large if table is large private Node delete(Node x, Key key) { // TODO // Remove this function. Delete should no longer be…

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