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- What precisely is metadata? An answer to this question may be found in the result set's metadata. Result set information may be beneficial in a variety of situations.To start, what is the Dataset object?oracle PL/SQL Create an anonymous block that prints all instructors First Name, Last name, and a phone. Hint: Use cursor and coursor FOR loop. desc instructor----------------------------------------- -------- ----------------------------INSTRUCTOR_ID NOT NULL NUMBER(8)SALUTATION VARCHAR2(5)FIRST_NAME VARCHAR2(25)LAST_NAME VARCHAR2(25)STREET_ADDRESS VARCHAR2(50)ZIP VARCHAR2(5)PHONE VARCHAR2(15)
- Write Mysql code for: The database has three tables for tracking horse-riding lessons: Horse with columns: ID - primary key RegisteredName Breed Height BirthDate Student with columns: ID - primary key FirstName LastName Street City State Zip Phone EmailAddress LessonSchedule with columns: HorseID - partial primary key, foreign key references Horse(ID) StudentID - foreign key references Student(ID) LessonDateTime - partial primary key Write a SELECT statement to create a lesson schedule for Feb 1, 2020 with the lesson date/time, student's first and last names, and the horse's registered name. Order the results in ascending order by lesson date/time, then by the horse's registered name. Make sure unassigned lesson times (student ID is NULL) appear in the results. Hint: Perform a join on the LessonSchedule, Student, and Horse tables, matching the student IDs and horse IDs.use https://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=MCRFPUS2&f=M to prepare data for time-series analysis Data needs to be melted All missing data must be removed Year should be converted to ‘string’ data type such that the Year is 4-digit string ‘Month’ and ‘Year’ should be combined and converted to Pandas datetime data type and promoted as index Unnecessary columns should be removedViews in SQL are kind of virtual tables. A view also has rows and columns as they are in a real table in the database. We can create a view by selecting fields from one or more tables present in the database. A View can either have all the rows of a table or specific rows based on certain conditions. Under what circumstances would you create a View?
- pz help in sql View can be used to retrieve data from several tables and to provide data security Select one: a. True b. FalseCan you explain the Dataset object in detail?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 delete the record of all those cities where city name ends with b fromlocations table.