Difference between full join and cross join in sql:-   CROSS JOIN FULL JOIN It combines each and every row from one table with another table. Specific condition or relationship is not required to match all the rows of two tables. It will generate possibility all the combination of rows. The number of rows present in the first table are multiplied with the number of rows present in the second table. It combines rows from the two tables when there is matched on the basis of specified condition and includes unmatched rows from the both tables with NULL values. It is known as cartesian product or cartesian join. It is known as full outer join. ON clause is not present. ON clause is present. On condition is not satisfied for those rows, it will placed NULL values for unpopulated fields. It will produce all the combinations of the rows. It is the co...

 Many to Many Relationships in join operations:  Joining tables or bridging tables are done on the basis of many to many relationships which are used to store records by every possible combination of records of both the tables. In order to handle many to many relationships is quite complex than one to one relationship and one to many relationships. It occurs when the multiple records in the table are related to the multiple records in another table. Students which are enrolling into the multiple courses are example of this type, which are part of the school or college database. Understanding of this concept are useful for designing scalable and flexible databases. In order to fulfill the various application requirements, the complex data interaction is required. This concept is important in the relational database management system. Problems or challenges occurred like database schema becoming too complex or maintaining the performance on the consistent basis. In ecommerce pla...

 One to Many Relationships: Each record in the Table A is associated with the multiple records in the Table B but each and every record of the table B is associated with only one record of Table A.Foreign key is used in the Table B and primary key is used in the Table A.It is type of relationships which is used for joining work or task. It is used as to store the information in the relational database.Sometimes,Table A is called as the parent table whereas Table B is called as the child table. It is also called as hierarchical relationship. One class has high number of students to attend for learning purpose is an example of this.

 Non-equi join: It is the type of inner join which combines the rows from two tables based on the condition. Comparison between the columns of the tables is not based on the equality operator (i.e. not equal to) or not equal sign operator like <,>,<= and >=. Matching data of the tables are based on an inequality operator rather than equality operator. It is allowing to filter the data of the tables on the basis of range conditions. It is based on the relative values which is satisfied by the tables. It is suitable to retrieve the data based on the range conditions. It is applicable when one or more columns are using an inequality comparison. It will filter the data on the basis of range. It is the type of inner join. It is used to check the duplicate values. It is used to examine that one value in the one table will fall into the another table. SYNTAX: SELECT * FROM table1 JOIN table2 ON table1.column_name>=table2.column_name; In the above syntax, we are joining tabl...

  What is an Equi Join in Oracle SQL? It is the kind of join operation in SQL which is used to combine the two tables on the basis of matching column between them. It will return all the rows from both tables and the value of the specified column should be equal. It is called as the type of inner join. It compares each column value of the source table with each value in the corresponding target table. It will not display null or unmatchable data. It is important for the data integrity, query performance and data normalization. Syntax: select * from table1 join table2 ON table1.column_name=table2.column_name; OR select column_name(s) from table1,table2 where table1.column_name=table2.column_name; In the above syntax, table1 and table2 are the two different tables which are being joined by using the common column name column_name in both tables i.e table1 and table2.Here, ON is the keyword which specifies the condition for combining the tables. Equality between the columns in the gi...

  NATURAL JOIN: It is the kind of join operation which creates join on the basis of the common columns in the tables. In order to perform this, there must be the common attribute between the tables.

 

 Difference between inner join and left join:-

 What are the different types of joins in oracle Sql? Oracle support various types of joins which are given as follows: Inner Join or Simple Join Outer Join Left Outer Join or Left Join Right Outer Join or Right Join Full Outer Join or Full Join Cross Join or Cross Apply or Cartesian product Self-Join Natural Join Equijoins Non-Equijoins Antijoins Semi joins Hash joins Nested Loop Joins Sort Merge Joins