plz help with the following:

1. Write the SQL command to save all the changes made to the table.

2. Remove a gallery number 5 from the GALLERY table. Is deleting a GALLERY row creates

   problems in the database, why/why not? If yes, how to solve this problem?

3. Select one of the following: (only one please)

   1. Display painters details who exhibit their paintings at more than one gallery at a time

   2. List the paintings that are displayed on a gallery that has the maximum rate.

sql file

CREATE TABLE GALLERY ( GAL_NUM char(4), GAL_OWNER varchar(35), GAL_AREACODE char(3), GAL_PHONE char(8), GAL_RATE number ); INSERT INTO GALLERY VALUES('5','L. R. Gilliam','901','123-4456',0.37); INSERT INTO GALLERY VALUES('6','G. G. Waters','405','353-2243',0.45 ); INSERT INTO GALLERY VALUES('1','N. D. Cosner','203','123-9956',0.67); INSERT INTO GALLERY VALUES('2','S. H. Artwork','415','154-3243',0.30);

/* -- */

CREATE TABLE PAINTER ( PTR_NUM char(4), PTR_LASTNAME varchar(15) NOT NULL, PTR_FIRSTNAME varchar(15) NOT NULL, PTR_AREACODE char(3), PTR_PHONE char(8) ); INSERT INTO PAINTER VALUES('123','Ross','Georgette','901','885-4567'); INSERT INTO PAINTER VALUES('126','Itero','Julio','901','346-1112'); INSERT INTO PAINTER VALUES('127','Geoff','George','615','221-4456');

/* -- */

CREATE TABLE PAINTING ( PTNG_NUM char(4), PTNG_TITLE varchar(35), PTNG_PRICE number, PTR_NUM char(4), GAL_NUM char(4) ); INSERT INTO PAINTING VALUES('1338','Dawn Thunder',245.5,'123','5'); INSERT INTO PAINTING VALUES('1339','A Faded Rose',6723,'123','1'); INSERT INTO PAINTING VALUES('1340','The Founders',567.99,'126','6'); INSERT INTO PAINTING VALUES('1341','Hasty Pudding Exit',145.5,'123',''); INSERT INTO PAINTING VALUES('1342','Plastic Paradise',8328.99,'126','6'); INSERT INTO PAINTING VALUES('1343','Roamin''',785,'127','6'); INSERT INTO PAINTING VALUES('1344','Wild Waters',999,'127','5'); INSERT INTO PAINTING VALUES('1345','Stuff ''n Such ''n Some',9800,'123','5');