. Show the ID of all the authors that do not have any books. a). Using a join: b). Using a subquery:
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Q: Write sql query for all type of join.
A: The above question that is sql query for all type of join is answered in below step
3. Show the ID of all the authors that do not have any books.
a). Using a join:
b). Using a subquery:
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- The above screen is used to browse the products table it uses the ProductDAO.java file, it calls the getProductByCriteria() function which should accept a parameter, this parameter should be the criteria that would be built from the two combo boxes and the text box, and queries the products table.The getProductByCriteria() function should return a list of Product objects that matches the criteria specified. Modify the function so that it accepts a string paramater consisting of the fields from the combo boxes and a price number from the text box separated by commas and use this string to modify the query in the function to return the desired result set. public List<Product> getProductByCriteria() //MAKE MODIFICATIONS TO THIS FUNCTION SO IT CAN TAKE PARAMETER(S) { if (openConnection()) { try{ List<Product> items = new ArrayList <> (); Product temp = null; String…Student – with no parameters, initialize all the data members to 0 or null. Data Members studentNo – int fname – String lname – String course – String Method Members setStudentNo – to set the student number of the student setFname – to set the firstname of the student setLname – to set the lastname of the student setCourse – to set the course of the student getStudentNo – to get the student number of the student getFname – to get the firstname of the student getLname – to get the lastname of the student getCourse – to get the course of the studentC sharp Table: Student (the headers are the field names in the Students table) StudentID Name Age Gender ProgramID 791 Stephanie Brown 19 Female BCS 236 Shannon Dawn 25 Female BA 618 Geoff Berg 24 Male ARET 256 Andrew Schilling 22 Male BSC 902 Gary Sang 23 Male DAAD Note: There is a StudentDataSet with a Student table, a StudentTableAdapter, a StudentBindingSource, and a StudentDataGridView control on the form.Note: There is an Average query, named Average, that returns the average age of the student from the Student table.Note: There is also Max query, named Highest, that returns the highest age of the student from the Student table.Write the code you would place in the AverageButton click event on your form to call the Average query and the Highest query and display in a DifferenceLabel, the difference between the highest age of a student and the average age.
- MongoDB 1) The customers collection includes documents that have accounts as a field that contains an array of values. Write a statement to retrieve a cursor containing all documents where there is only one account. 2) Write a statement that returns only the email addresses of all customer documents. 3) Write a statement to retrieve a cursor containing all customer documents where the active field within the main document (i.e., do not worry about nested documents) is set to true. 4) Write a statement to retrieve a cursor containing all customer documents that do not have the active field within the main document (i.e., do not worry about nested documents). (Hint: Take a look at the Query and Projection operators in the MongoDB documentation to find an operator that helps determine whether a field exists within a document.)Simple Student Management System Build the following app using Python Tkinter library. Using this app, user can • add student information • view all students • search student(s) by name • remove student by id Add • First name, last name, date of birth cannot be blank while adding a specific student information. • However major can be blank, which gets set to "Undefined" if left out blank. • Student Id is automatically generated by the program (ex: 1001, 1002, 1003, 1004 ….) If the user keeps a mandatory field blank (ex: First name) and presses "Add Student" button, it displays the following message box: first name is required If the user successfully enters all the necessary information and presses the "Add Student" button, it displays the following confirmation message box: student added View All When the user presses the "View All" button, it displays all the student’s information (Id, First name, Last name, Date of birth, and Major) in a nice formatted way. Example below: • Must…Which statement(s) are false about Map?* It cannot contain duplicate keys and each key can map to at most one value. It is an object that maps keys to values, or is a collection of attribute-value pairs. It can map a key to a function. A Map is an object that maps functions to values, or is a collection of attribute-value pairs.
- Build a list of contacts for New Jersey manufacturers as follows: ContactFirstName, ContactLastName, Phone. HINT: To do this you will need to split the contact name into two columns. You will need to embed string functions within string functions. It may be helpful to use Substring and Charindex. For last name, you can use a literal of 20 characters as the length to ensure you pick up all the characters to the end of the field.)5.9 LAB - Database programming with Java (SQLite) Complete the Java program to create a Horse table, insert one row, and display the row. The main program calls four methods: createConnection() creates a connection to the database. createTable() creates the Horse table. insertHorse() inserts one row into Horse. selectAllHorses() outputs all Horse rows. Complete all four methods. Method parameters are described in the template. Do not modify the main program. The Horse table should have five columns, with the following names, data types, constraints, and values: Name Data type Constraints Value Id integer primary key, not null 1 Name text 'Babe' Breed text 'Quarter horse' Height double 15.3 BirthDate text '2015-02-10' The program output should be: All horses: (1, 'Babe', 'Quarter Horse', 15.3, '2015-02-10') This lab uses the SQLite database rather than MySQL. Both SQLite and MySQL Connector/J implement the JDBC API. Consequently, the API is as…5.9 LAB - Database programming with Java (SQLite) Complete the Java program to create a Horse table, insert one row, and display the row. The main program calls four methods: createConnection() creates a connection to the database. createTable() creates the Horse table. insertHorse() inserts one row into Horse. selectAllHorses() outputs all Horse rows. Complete all four methods. Method parameters are described in the template. Do not modify the main program. The Horse table should have five columns, with the following names, data types, constraints, and values: Name Data type Constraints Value Id integer primary key, not null 1 Name text 'Babe' Breed text 'Quarter horse' Height double 15.3 BirthDate text '2015-02-10' The program output should be: All horses: (1, 'Babe', 'Quarter Horse', 15.3, '2015-02-10') This lab uses the SQLite database rather than MySQL. Both SQLite and MySQL Connector/J implement the JDBC API. Consequently, the API is as…
- struct DateTag{ int nMonth; int nDay; int nYear; }; struct NameTag{ char strFirst[ 31 ]; char strLast[ 21 ]; }; struct EmployeeTag{ int nId; struct NameTag sName; struct DateTag sBirth; }; struct DepartmentTag{ char strName[ 21 ]; char strDescription[ 51 ]; struct EmployeeTag sManager; struct EmployeeTag arrEmployees[ 15 ]; }; struct CompanyTag{ char strName[ 31 ]; struct DepartmentTag arrDepartments[ 10 ]; }; struct CompanyTag c1, c2; struct DepartmentTag d1, d2; struct EmployeeTag e1, e2; struct EmployeeTag *pEmp; 1. Which statement(s) is/are syntactically correct? a) e1 = d1.sManager; b) e1 = d1.arrEmployees; 2. Which statement(s) is/are syntactically correct? a) d1.arrEmployees[ 0 ] = pEmp; b) pEmp = d1.arrEmployees; 3. Which statement(s) is/are syntactically correct? a) c1.d1 = d2; b) c2.arrDepartments[1] = d2;Review concepts for VB.net: Please explain the following concepts (what they do and how to use them): - dvgList.DataSource = query.ToList - dgvList.CurrentCell = Nothing - dgvList.Columns(“name”).HeaderText = “Student Name” - dgvList.RowHeadersVisible = True or FalseTrue or FalseAn application works directly with a database, modifying rows, deleting rows, adding new rows, and so forth.