Validation based protocolavoids the concurrency of the transactions and works based on the assumption that if no transactions are running concurrently then no interference occurs. This is why it is also calledOptimistic Concurrency Control Technique. In this protocol, a transaction doesn’t make any c...
DBMS Validation Based Protocol MCQs: This section contains multiple-choice questions and answers on Validation Based Protocol in DBMS.Submitted by Anushree Goswami, on April 19, 2022 1. What is the Validation Phase also known as?Optimistic Concurrency Control Technique Optimistic Consecutive Control ...
However, given the traditionally “flat” nature of database tables, there has until recently been no corresponding structure in persistent data, although object-relational DBMSs (database management systems)—such as Postgres, first described in (Stonebraker and Moore, 1996)—and recent versions of...
A query plan (also referred to as “query execution plan”) is a sequence of steps that a database management system (DBMS) executes in order to complete a query. When a query is run for the first time in the DBMS, the query can be compiled by a query optimizer to generate a corres...
ERROR [HY000] [DataDirect][ODBC Progress OpenEdge Wire Protocol driver][OPENEDGE]Invalid date string (7497) (pgoe1022.dll) Error = [Microsoft][ODBC Driver 13 for SQL Server]Unable to open BCP host data-file Error =UTF-8 encoding (code page 65001) error 1603 installing microsoft sql na...
I just tried to upgrade to 0.32.0-RC2 from 0.31.2 and got this error (full log): ERROR metabase.core :: Metabase Initialization FAILED liquibase.exception.ValidationFailedException: Validation Failed: 1 change sets check sum migrations/0...