The document provides SQL DDL statements to define the schema for a relational database about researchers, experiments, microarrays, and the relationship between experiments and microarrays. It includes CREATE TABLE statements that define primary keys and foreign keys to link the tables for researcher name and ID, experiment ID and date, microarray ID and attributes, and a join table to contain the many-to-many relationship between experiments and microarrays.

1. Write appropriate SQL DDL statements (Create Table Statements) for declaring the following
relational database schema. Specify appropriate primary keys, referential keys, and other
constraints. RESEARCHER Name Title EXPERIMENT Eid Date Time X# MICROARRAY
Mid Platform Organism Tissue CONTAIN Eid Mid
Solution
DDL statements for researcher,Experiment, MidArray,Contain table
Create Table Researcher
(
X# int Not Null,
Name Varchar(20),
Tilte Varchar(20),
Primary Key(X#)
);
Create Table Experiment
(
Eid int Not Null,
Date Date,
Time Date,
X# int,
Primary Key(Eid),
Foreign Key(X#) References Researcher(X#)
);
Create Table MicroArray
(
Mid int Not Null,
Platform varchar(20),
Organism varchar(20),
Tissue varchar(20),
Primary Key(Mid)
);
Create Table Contain

2. (
Eid int,
Mid int,
ForeignKey(Eid) References Experiment(Eid),
ForeignKey(Mid) References MidArray(Mid)
);
For further queries kindly get back