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- what is insert anomaly, Updateanomaly, and Delete anomalyIndexing can clearly be very beneficial. Why should younot create an index for every column of every table of yourdatabase?Import the following database: CREATE DATABASE COUNTRIES; USE COUNTRIES; DROP TABLE IF EXISTS `City`; CREATE TABLE `City` ( `ID` int(11) NOT NULL AUTO_INCREMENT, `Name` char(35) NOT NULL DEFAULT '', `CountryCode` char(3) NOT NULL DEFAULT '', `District` char(20) NOT NULL DEFAULT '', `Population` int(11) NOT NULL DEFAULT '0', PRIMARY KEY (`ID`) ) ENGINE=MyISAM AUTO_INCREMENT=4080 DEFAULT CHARSET=latin1; -- -- Dumping data for table `City` -- -- ORDER BY: `ID` INSERT INTO `City` VALUES (1,'Kabul','AFG','Kabol',1780000); INSERT INTO `City` VALUES (2,'Qandahar','AFG','Qandahar',237500); INSERT INTO `City` VALUES (4,'Mazar-e-Sharif','AFG','Balkh',127800); INSERT INTO `City` VALUES (5,'Amsterdam','NLD','Noord-Holland',731200); INSERT INTO `City` VALUES (6,'Rotterdam','NLD','Zuid-Holland',593321);(3068,'Berlin','DEU','Berliini',3386667); INSERT INTO `City` VALUES (3069,'Hamburg','DEU','Hamburg',1704735); INSERT INTO `City` VALUES (3072,'Frankfurt am Main','DEU','Hessen',643821); INSERT INTO…
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- Refer to the film and inventory tables of the Sakila database. The tables in this lab have the same columns and data types but fewer rows. Write a query that lists the titles of films with the fewest rows in the inventory table. This query requires a subquery that computes the minimum of counts by film_id: SELECT MIN(count_film_id) FROM ( SELECT COUNT(film_id) AS count_film_id FROM inventory GROUP BY film_id ) AS temp_table; This subquery is provided in the template.plz help fix the following use oracle plz create table volunteer(Vol_ID int NOT NULL,name varchar(20),Telephone varchar(12),Address varchar(40),primary key(Vol_ID)); create table item(Item_ID int NOT NULL,Description varchar(20),value int NOT NULL,quantity int NOT NULL,primary key(Item_ID)); create table Packinglist(List_ID int NOT NULL,name varchar(20),description varchar(30),primary key(List_ID));create table Task(Task_code varchar(10) NOT NULL,list_ID varchar(20),task_description varchar(12),type varchar(10),status varchar(10),primary key(Task_code),foreign key(List_ID) references Packinglist); create table Package(pack_ID int NOT NULL,task_code varchar(20),date date,weight int NOT NULL,primary key(pack_ID),foreign key(task_code references task); create table assignment(Vol_ID int NOT NULL,task_code varchar(20) NOT NULL,start_time DateTime,end_time DateTime(40) ,primary key(Vol_ID,task_code),foreignkey(Vol_ID) references volunteer,foreign key(task_code) references Task,constraint…Create LessonSchedule table with FK constraints in mysql database Two tables are created: Horse with columns: ID - integer, primary key RegisteredName - variable-length string Student with columns: ID - integer, primary key FirstName - variable-length string LastName - variable-length string Create the LessonSchedule table with columns: HorseID - integer with range 0 to 65 thousand, not NULL, partial primary key, foreign key references Horse(ID) StudentID - integer with range 0 to 65 thousand, foreign key references Student(ID) LessonDateTime - date/time, not NULL, partial primary key If a row is deleted from Horse, the rows with the same horse ID should be deleted from LessonSchedule automatically. If a row is deleted from Student, the same student IDs should be set to NULL in LessonSchedule automatically.
