This is a valid SQL statement: Values stored in a table, but not in an Oracle instance, are stored in pseudocolumns.
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This is a valid SQL statement:
Values stored in a table, but not in an Oracle instance, are stored in pseudocolumns.
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- assume that a database has a table named Stock, with thefollowing columns:Column Name TypeTrading_Symbol nchar(10)Company_Name nchar(25)Num_Shares intPurchase_Price moneySelling_Price money Write a Select statement that returns the Trading_Symbol column and the Num_Shares column from every row in the table.Until a file signature analysis is run, EnCase relies on the ______ to determine its file type. header extension database acquisition hash libraryGive an example of a stored procedure written in Oracle’s PL/ SQL that is intended to check whether a user name already exists in the database
- You should use an Oracle function to calculate the number of days that have gone between your birthday and the current date.Chapter 16 How to manage transactions and locking Excercises using the My Guitar Shop Database Use Microsoft SQL Server Write a script that includes two SQL statements coded as a transaction to delete the row with a customer ID of 8 from the Customers table. To do this, you must first delete all addresses for that customer from the Addresses table. If these statements execute successfully, commit the changes. Otherwise, roll back the changes.Writes a PL/SQL function that calculates the factorial of a number passed as a parameter. The Factorial of a number n is defined as −0! = 1n! = n*(n-1)*(n-2)*(n-3)... 1 for n > 0
- SQL QUERIES Employees(EMPLOYEE_ID, FIRST_NAME, LAST_NAME, EMAIL, PHONE_NUMBER, HIRE_DATE,JOB_ID, SALARY, COMMISSION_PCT, MANAGER_ID, DEPARTMENT_ID,DEPARTMENT_NAME)Department(DEPARTMENT_ID, DEPARTMENT_NAME, MANAGER_ID, LOCATION_ID)Location(LOCATION_ID,STREET_ADDRESS,POSTAL_CODE,CITY,STATE_PROVINCE,COUNTRY_ID) Write a query in SQL to display the DEPARTMENT_NAME of all those Departments whoseDEPARTMENT_ID is greater than the DEPARTMENT_ID of Physics department. Write a Query in SQL to show the FIRST_NAME of all those employees whose salary is lessthan the salary of all those employees whose MANAGER_ID is 101 or 102.Using php and sql: Create a PDO object to connect to your database for running select queries.Write a database query to output all the messages in the messages table.import sqlite3 from sqlite3 import Error # Creates connection to sqlite in-memory database def create_connection(): """ Create a connection to in-memory database :return: Connection object """ try: conn = sqlite3.connect(":memory:") return conn except Error as e: print(e) # YOUR CODE HERE # Use sqlite3.connect(":memory:") to create connection object return conn # query to create the table table_sql = """ CREATE TABLE Horses ( id integer PRIMARY KEY NOT NULL, name text, breed text, height real, birthday text ); """ # query to insert data into the table ins_sql = """INSERT INTO Horses VALUES(1,'Babe','Quarter Horse',15.3,'2015-02-10'); """ # query to fetch all data from the table fetch_sql = """SELECT * FROM Horses;""" # creating db connection conn = create_connection() # fetching a cursor from the connection c = conn.cursor() # executing statement to create table c.execute(table_sql) # executing statement to…
- **In SQL** Write a SELECT statement that returns these columns: InstructorDept The DepartmentName column from the Departments table for a related instructor LastName The LastName column from the Instructors table FirstName The FirstName column from the Instructors table CourseDescription The CourseDescription column from the Courses table CourseDept The DepartmentName column from the Departments table for a related instructor Return one row for each course that’s in a different department than the department of the instructor assigned to teach that course. (Hint: You will need to join the Departments table to both the Instructors table and the Courses table, which will require you to use table aliases to distinguish the two tables.)SQL Database Write PL/SQL or T-SQL procedures to accomplish the following tasks: Obtain the first name and last name, separated by a space, of the guide whose number currently is stored in I_GUIDE_NUM. Place these values in the variables I_FIRST_NAME and I_LAST_NAME. Output the contents of I_GUIDE_NUM, I_FIRST_NAME, and I_ LAST_NAME. Obtain the number of persons, customer number, and customer last name for every reservation whose ID currently is stored in I_RESERVATION_ID. Place these values in the variables I_NUM_PERSONS, I_CUSTOMER_NUM, and I_LAST_NAME, respectively. Output the contents of I_NUM_PERSONS, I_CUSTOMER_NUM, and I_LAST_NAME. Add a row to the GUIDE table. Change the last name of the guide whose number is stored in I_GUIDE_NUM to the value currently found in I_LAST_NAME. Delete the guide whose number is stored in I_GUIDE_NUMExecute the following statements using MYSQL: 1.Create a Trigger "trigger regno" for the salesman table (Before INSERT) set the value as O for the experience > 7 and evaluate it. Also write the syntax to drop the Trigger "trigger regno* 2. Insert a value for Customer table (#Last 3 digit of your register no, #Your name, Vellore, 55, 010). Insert a value for salesman table ("10", #Your name, 5, 4000). 3. List out the number of customers in each city by arranging them from low to high. ( 4. Select all the salesman who's work experience is between 4 and 8.