The helper class method called when you need to update data in database table is O a. getCreateableDatabase() O b. getWritableDatabase() O c. none of these O d. getUpdateableDatabase()
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- what is the output? public class testone {public static void main(String[]args) {Database mydata = new Database();mydata.addRecord(8);mydata.addRecord(3);mydata.addRecord(10);System.out.println(mydata);}}class Database{private final Object Record;private Recordpublic Database () {Record = new Record(0);}public void addRecord (int a){Record rec = new Record(rec.getValue() + a);} public String toString(){String rec = null;return ""+rec;}}class Record{private int Value;public Record (int val){Value = val;}public int getValue(){return Value;public String toString(){return "" + Value; }}do not use AI or chat GPT for answering...Problem You would like to add a logging capability to a library, but don’t want it to interfere with programs that don't use logging.
- A very long line: What data structure or structures would you use to maintain a very long queue of records, each having an id (some sort of string). You need to be able to find the first item in O(1) time, add to the end in O(1), and remove items in O(1) time, given some id (not index), from anywhere in the line. Additionally, you need to be able to find an item in line in O(1) time and see what items are near it (in front of or in back of) in O(1), possibly more (each is O(1) time). Explain what is stored in each Data Structure (“record (with id possibly)”, “pointers to ______”).remove the value user inputted only not the key example Firstname [firstname]: John Middlename [middlename]: George Lastname [lastname]: Doe A for ADD D for DELETE Any key for END when enter 'D' lastname Firstname [firstname]: John Middlename [middlename]: George Lastname [lastname]: A for ADD D for DELETE Any key for END only the inputted will be remove not together the lastname names = {"firstname":"","middlename":"","lastname":""} choice = "A"while choice == "A" or choice == "D":print("\n\t A for ADD\n\t D for DELETE\n\t Any key for END")choice = input("\n\t Your choice: ")for k,v in names.items():print("\n\t "+k.capitalize()+" ["+k+"] : "+v)if choice == "A":key = input("\n\t Enter key: ")value = input("\n\t Enter value: ")names.update({key:value})for k,v in names.items():print("\n\t "+k.capitalize()+" ["+k+"] : "+v)elif choice == "D":delete_key = input("\n\t Enter key: ")names.pop(delete_key)for k,v in names.items():print("\n\t "+k.capitalize()+" ["+k+"] : "+v)else:print("\n\t…What collection-type data type is most useful with data values that are heterogeneous and may be processed differently? record data types arrays associative arrays hashes
- - Explain in detail about view-synchronous group communication.Create a Java application for Checkers called CheckersStockTakingApp. The application should consist of a client side, a server side and a database.4.1 Create a database called checkersproducts using MySQL or any relational database management software you are comfortable with. The database should have a table called products that consists of the following columns and properties:prodID AUTO NUMBER (primary)prodName VARCHAR (30)prodType VARCHAR (30)prodPrice DECIMAL (6,2)4.2 Create a server class that will do the following:• Run on port 8000 and listen to a client• Initially output a “server is starting” message to the screen• Make a connection to the database• Receive product details from the client• Add product details to products table• Send a message back to client to inform whether or not the product was added• Handle any exceptions• Close the server when the user types "stop" on the client side and output a message"Server stopping...." 4.3 Create a client class that will do the…please solution Python language using list 2. Create a program that would save employee information (Employee ID, Name, Job Title, and Salary). Then, print employee names with their salary and job title. Also, get the average salary for all employees.
- Implement c# program to Retrieving a value using its associated key can be accomplished using an indexer, which works just like an indexer for an array. A key is passed in as the index value, and the value associated with the key is returned, unless the key doesn’t exist, in which a null is returned. you can use an indexer along with the Keys method to retrieve all the data stored in a hash tableWhich example uses the SOLID SRP principle correctly and does not violate it? (A or B) A. public class DatabaseParser { ParseDirectoryMapFile(); // parse directory map fileParsePasswordFile(); // parse user fileParseReviewDataFile(); // parse review data fileParseTeamFile(); // parse team CalculateGrade(); CalulateRelativeGrade(); } B public class DatabaseParser { ParseDirectoryMapFile(); // parse directory map fileParsePasswordFile(); // parse user fileParseReviewDataFile(); // parse review data fileParseTeamFile(); // parse team file} // seperately with the following: public class Calculator{ CalculateGrade(); CalulateRelativeGrade(); }/* Created with SQL Script Builder v.1.5 */ /* Type of SQL : SQL Server */ CREATE TABLE EMPLOYEE ( EMP_CODE int, EMP_TITLE varchar(4), EMP_LNAME varchar(15), EMP_FNAME varchar(15), EMP_INITIAL varchar(1), EMP_DOB datetime, JOB_CODE varchar(5), STORE_CODE int ); INSERT INTO EMPLOYEE VALUES('1','Mr.','Williamson','John','W','5/21/1964','SEC','3'); INSERT INTO EMPLOYEE VALUES('2','Ms.','Ratula','Nancy','','2/9/1969','MGR','2'); INSERT INTO EMPLOYEE VALUES('3','Ms.','Greenboro','Lottie','R','10/2/1961','GEN','4'); INSERT INTO EMPLOYEE VALUES('4','Mrs.','Rumpersfro','Jennie','S','6/1/1971','GEN','5'); INSERT INTO EMPLOYEE VALUES('5','Mr.','Smith','Robert','L','11/23/1959','GEN','3'); INSERT INTO EMPLOYEE VALUES('6','Mr.','Renselaer','Cary','A','12/25/1965','GEN','1'); INSERT INTO EMPLOYEE VALUES('7','Mr.','Ogallo','Roberto','S','7/31/1962','MGR','3'); INSERT INTO EMPLOYEE VALUES('8','Ms.','Johnsson','Elizabeth','I','9/10/1968','SEC','1'); INSERT INTO EMPLOYEE…