Descending indexes extend the functionality of a B*Tree index. They allow for a column to be stored sorted in descending…
Another feature of a BTree index is the ability to reverse its keys. At first, you might ask yourself, “Why…
The blockchain row retention clause controls when rows can be removed from the table.The syntax for the blockchain row retention…
We have already seen a partial example of an object table with nested tables. An object table is a table…
When performing direct path operations on a temporary table (where ON COMMIT PRESERVE ROWS is enabled), session-level statistics are gathered…
Oracle provides an internal PL/SQL package DBMS_BLOCKCHAIN_TABLE that can be used to perform the following: •\ Delete rows in a…
Object tables are used to implement an object-relational model in Oracle. A single object table will create many physical database…
Oracle provides two types of temporary tables: global and private. Either type of temporary table can be useful in an…
Setting PCTFREE is sometimes overlooked. On the one hand, you need to use it to avoid too many rows from…
Here is where the “virtually a table for every row” comes into play. In the SELECT predicate shown earlier, it…