Meanwhile, in the information schema, the names of some of the objects are generic names, which might be happened in user applications or the software. If you do use SQL Developer or Toad, they have a feature where you bring up a table and it gives you the SQL (not PL/SQL - that is not needed, plain and very fast SQL is all that's needed) to re-create the tables, INCLUDING constraints and comments. The user gets all the advantages of the particular schema if the owner of the information schema is the original database user. Expertise in Client-Server application development using Oracle 11g/10g/9i/8i, PL/SQL, SQL PLUS, TOAD and SQLLOADER. Unfortunately, you CAN'T execute the DESCRIBE command in SQL or in PL/SQL, because DESCRIBE is a SQLPlus command, it is NOT a SQL or PL/SQL command. However, the benefit of using PURGE is that you can ensure that. The risk of specifying the PURGE option is that you will not be able to recover the table. The PURGE option will purge the table and its dependent objects so that they do not appear in the recycle bin. Thus, if we want to access all objects, we will use it through its qualified names. When issuing a DROP TABLE statement in Oracle, you can specify the PURGE option. What do you observe Drop the table and view after you complete the exercise. And by default, it is not available in the schema search path. Then add a column to the table and describe the view. All the best as you go down to tackle these questions. It consists of 30 basic to advanced programming questions to assist you in your practicing session. Here, the information schema itself is a schema that is automatically present in all databases and called information_schema. Oracle SQL and PL/SQL Practice Quiz For Developers. In pgAdmin 4, we are going to use the information_schema for describing the tables. PostgreSQL DESCRIBE TABLE using pgAdmin 4 Note: In PostgreSQL, we cannot have the direct command to Describe the table, but using MySQL, we use the DESCRIBE command directly to identify the information on the columns of a specific table. PostgreSQL describe table using pgAdmin 4.In PostgreSQL, to find the information on columns of a table, we can use the describe command query in two different ways, which are as follows:
PL SQL DEVELOPER DESCRIBE TABLE HOW TO
In this section, we are going to discuss how to describe a table in PostgreSQL.