ASSIGNMENT 1:
1. Write a lex/flex code for a language (SQL) having the following features:
CREATE TABLE <table name ( <attribute <column type <constraints, …) SELECT <query query may contains nested SELECT <query INSERT INTO <table name<optional attributes VALUES <value, … UPDATE <table name SET <attribute=value, … WHERE <conditions conditions may contain nested SELECT <query DELETE FROM <table name WHERE <conditions DROP TABLE <table name ALTER TABLE <table name DROP COLUMN <column name ALTER TABLE <table name ADD <column name <column definition
2. Also write a C code for the accepter for the features as explained.
