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The nested set model is a technique for representing nested set collections (also known as trees or hierarchies) in relational databases.. It is based on Nested Intervals, that "are immune to hierarchy reorganization problem, and allow answering ancestor path hierarchical queries algorithmically — without accessing the stored hierarchy relation".
Using a SELECT statement after the INSERT statement with a database-specific function that returns the generated primary key for the most recently inserted row. For example, LAST_INSERT_ID() for MySQL. Using a unique combination of elements from the original SQL INSERT in a subsequent SELECT statement.
The DUAL table is a special one-row, one-column table present by default in Oracle and other database installations. In Oracle, the table has a single VARCHAR2(1) column called DUMMY that has a value of 'X'. It is suitable for use in selecting a pseudo column such as SYSDATE or USER.
Turns out J.Lo and Ben “have a mutual respect for one another” and that's “not something that goes away” quickly. As the insider put it, “Obviously things haven’t been the same, but ...
WASHINGTON (Reuters) -A U.S. Justice Department watchdog report released on Thursday debunked claims by far-right conspiracy theorists who falsely alleged that FBI operatives were secretly ...
Add former Gov. Chris Christie to the list of New Jersey residents reporting mysterious "drone" sightings outside of their homes. As reports of strange lights seen in the sky in New Jersey and ...
Oracle Database (commonly referred to as Oracle DBMS, Oracle Autonomous Database, or simply as Oracle) is a proprietary multi-model [4] database management system produced and marketed by Oracle Corporation. It is a database commonly used for running online transaction processing (OLTP), data warehousing (DW) and mixed (OLTP & DW) database ...
Members of Congress may be getting an up to $6,600 raise this year. That's due to a provision in a must-pass funding bill that's set to get a vote this week.