As indicated by the number in the IXSCAN node and the FETCH node, one record is found in CUST_ORDER_HEADER each time the index scan is performed. 正如所指出的那样,在IXSCAN节点和FETCH节点上的数目,每次在CUSTORDERHEADER上发现记录时都会执行索引扫描。
HAMMER numbers each record it lays down and stores a synchronization point in the cluster header. HAMMER每个记录数值被安置和存储在集群头部的一个同步点上。
A record that follows a header. 跟在标头后面的一个记录。
A word in a record header that contains a count of the words in the record. 记录首部中的一个字,它包含该记录的字计数。
The record header contains a bit vector for indicating NULL columns. 记录头包含一个位向量,用来指明空列。
The SEED format of station tape and the instance revealment of the data record with variable header section 从展示到纪录SEED格式台站卷及带有可变头段节数据记录的实例剖析