Calculate the unavailability of the following system. The load balancer switches cleanly between the presentation server and its backup. The presentation server uses the main database but can fail over to the database backup. The backup presentation server is only configured to use the main database, not its backup. Assume the following unavailabilities. Item Unavailability LoadBalancer 0.9% PresentationServer 0.9% PresentationServerBackup 0.7% Database 1.1% DatabaseBackup 0.6%
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Calculate the unavailability of the following system. The load balancer switches cleanly between the presentation server and its backup. The presentation server uses the main
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- There are two types of objects: scripts and stored procedures. How do their differences manifest themselves? Different people have different roles. When possible, it is best to install Stored Procedures through the database.Appointment scheduling by an administrative staff: The below given is a scenario shows the process of patient appointment scheduling by an administrative staff.The staff login to the system, the system validates the credentials. The staff selects appointmentpage and select an appointment date. Add the patient ID and send for an appointment to thesystem. The system verifies the date and accepts or reject based on the availability of the bookingslot on that particular date. If the booking is available, the database will be updated and sendconfirmation message to the staff, or sends an error message. the proplem: 3.14 - Draw a sequence diagram for the Appointment scheduling by anadministrative staff.Requirements of the sequence diagram The objects involved Messages between the objects The objects’ lifelines A fragment [if any]create a new database (named MyUniversity), the creation (using the CREATE command) shouldbe done once. The database is now created and saved locally on your computer. When you close the workbench and reopen it again, no need to re-run this CREATE command again (the compiler will give you an error, as the database you would like to create was already created) Task Description: consider the following relations for a university: Student (sid: integer, sname: string(100 chars), GPA: real, dateOfBirth: date, Did: integer, FirstYear: integer) Department (did: integer, dname: string(30 chars), capacity: integer) Course (cid: integer, cname: string(50 chars), credit: integer) Enroll (studentID: integer, courseID: integer, departmentID: integer, enrollmentDate: date, finalGrade: real) studentID, courseID, and departmentID in Enroll are foreign keys referencing the primary keys of the student, course, and department relations, respectively. Did in Student is a foreign key referencing the…
- 1. Develop a simple but functional banking system using your created/designed database for this. Use the fields you have added/created in your database. Your system should have a function for deposit, withdrawals, bank transfers, bills payments, computation of interests at a fixed date (every 15th of the month, about 0.001 interest on the current balance), and other transactions you might want to include depending on your database. Display the database before and after update. Design your own GUIs (input/output windows).Draw a component diagram for the text. Draw as in the example picture. Let it be visual. HoneynetCentralServer Dependencies: Honeypot, LogProcessor Honeypot Dependencies: LogEntry LogEntry LogProcessor Dependencies: MongoDBAtlasDatabase, ExternalAPI (optional) MongoDBAtlasDatabase Dependencies: StoredLogEntry StoredLogEntry ManagementTool Dependencies: HoneynetCentralServer or LogProcessor (depending on where data fetching occurs), ExternalAPI (optional) ExternalAPI To create the component diagram, you would represent each component as a rectangle with its name inside. Then, draw dependency arrows between the components to show their relationships, as indicated in the list above. For example, you would draw an arrow from HoneynetCentralServer to Honeypot and another arrow from HoneynetCentralServer to LogProcessor to indicate that the HoneynetCentralServer depends on these two components. Similarly, draw arrows between other components based on their dependencies. For…ASS -3 Consider the person database with info table has been created. Develop a web application with functions such as that. The user can choose from the main interface one of the following operations • Add a new record to the information table, in case there is any problem with data entry, help the user by reducing the re-entry process and highlighting the place of the wrong • Search for a specific record by id or first name (use roadio button) • List and Count the number of the record with the same first name or middle name or both together (use check button) • Delete records based on the last name • After the selected process is completed successfully, the main interface appears again with the option to exit
- Create a new database using phpmyadmin (or any other method you choose). The database should have at least two tables: One table should be able to store the username and password of users for session management. Insert one record in this table for use later in the project. The second table should be able to store the articles written by the user. The only information we need for articles is the author (which would be a user of the system), the title of the article and the content of the article. The content field should be able to store at least a thousand characters. Insert one simple record in this table for use later in the project H4I have a database of 2 million+ music CDs. For each CD there is the title, the artist name (or various), and the list of tracks. Each track has a song name and an artist name. Other information (e.g., length of tracks, genre, notes) is available as well. • Your job is to create a front end incorporating the above scenario to help a restaurant. It can be a front end to help select music It can be a front end to help determine what CDs to buy. It can be a front end to help order what to play in the restaurant. • Your team should produce one or more sample pages (depending on your application) Produce simple HTML/CSS that implements a sample pageI have a database of 2 million+ music CDs. For each CD there is the title, the artist name (or various), and the list of tracks. Each track has a song name and an artist name. Other information (e.g., length of tracks, genre, notes) is available as well. • Your job is to create a front end incorporating the above scenario to help a restaurant. It can be a front end to help select music It can be a front end to help determine what CDs to buy. It can be a front end to help order what to play in the restaurant. • Your team should produce one or more sample pages (depending on your application) Produce simple HTML/CSS that implements a sample page Both input (query) and output (result) pages as appropriate • Feel free to use html generation tools (or a simple text editor) Dreamweaver, Pencil, Word, Chrome debugger. Online tools: https://html-online.com, Google Docs (Sites, Forms).
- Create a vaccination system Java or Php that has the following features:1. Add client record(such as firstname, lastname, middlename, category, address, date of first dose, date of second dose)2. View all records in the database3. Search for a particular record using firsname/lastname/category4. Modify records in the database.5. Delete record in the databaseA company sells toys by mail order. The company already has a product database, with a simple web interface, so that customers can get information about toys and prices. Currently, customers place orders by mail or by telephone. The company decides to create a system for selling toys online. The system will have three components: a product database, a customer database, and an ordering system. The plan is to develop the system in two phases: Phase 1 The product database will remain unchanged but the web interface will be replaced by the ordering system. A fully featured version of the ordering system will be developed. Every effort will be made to create an ordering system that will need little or no modifications in Phase 2. A simple version of the customer database will be developed. Page 3 of 4 Phase 2 A new product database will be created. Major enhancements will be made to the customer database. Minor changes may be made to the ordering…Scenario and Database Model: InstantRide InstantRide is the new ride sharing application in the city and it has just started its operations. With the help of the InstantRide mobile application, the users request a ride with their location. Drivers and cars are assigned to the request; and then the driver picks up the user to ride their requested location. Information for the users, drivers and cars are stored in the database as well as the travel transactions. In the USERS table, information for the users are stored with their first name, last name and email: In the DRIVERS table, all the drivers in the InstantRide are stored with their name, driving license number and check and rating information: In the CARS table, all the cars in the InstantRide system are kept with the license plate, model and year: Finally, the transactions of the rides are stored in the TRAVELS table. For each travel, start and end time with location are stored. In addition, the involved driver, car and…