Executing CREATE statements in SQL plus We can execute the create table in an Oracle database in which we have to specify the columns that need to be created along with the datatypes for various columns like whether it is a Varchar ,integer or Float kind of an attribute. One needs to use the below …
Executing INSERT statements in SQL plus The insert statement is used to insert data in the Oracle database through the SQL INSERT command. Fig 7.2 The above figure shows the INSERT command being executed where the table is specified along with the values to be inserted in the table. Here in the table Students the values inserted …
The select queries is used to fetch the data from the database .We can also use FROM to fetch the data from the table based on certain selection or condition. The below figure shows how to execute the select command. Fig 7.4 Fig 7.5 SELECT USING FROM The below figure shows that the query to …
Executing queries using UPDATE statements The update query is used to update certain records in the table based on a certain condition or expression. We can execute the update statement as in Fig 7.8 Fig 7.8 The above figure executes the update query on the table students where a certain city is updated based on …
Executing queries using DELETE statements The delete statement is used to delete certain records from the table based on a certain condition or expression. Fig 7.10 shows how to execute the delete statement. Fig 7.10 The fig 7.11 shows how this delete command is executed and the results are shown. Fig 7.11 The above figure …
EXECUTING queries USING DROP statement. The drop statement is used to drop a table from a database using the SQL plus query interface. Fig 7.12 shows how this statement is executed to drop a table. Fig 7.12 This shows shows to execute the drop statement and to drop a table from the database. The figure …