. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 741 RDB$TIME_ZONES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . allows Firebird to index and compare two values in different time zones. Storing at UTC has some caveats: • When you use named zones, and the time zone rules for that zone change, the UTC time stays or a named zone). Firebird uses the ICU implementation of the IANA Time Zone Database for named zones. Examples Using EXTRACT() EXTRACT (TIMEZONE_HOUR FROM TIME_TZ_FIELD) EXTRACT (TIMEZONE_MINUTE FROM

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349 Mapping cells to zones and regions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . proximity with the target • Reduce bandwidth costs by skipping cells that are in different availability zones • Select cells where replica lags are lower -tablet_types optional default replica A comma-separated with the target • To reduce bandwidth costs by skipping cells that are in different availability zones • Select cells where replica lags are lower -tablet_types optional default replica A comma-separated

.................................................................................124 8.5.3. Time Zones ................................................................................................125 of date/time input and for the recognized text fields including months, days of the week, and time zones. Remember that any date or time literal input needs to be enclosed in single quotes, like text strings Description z Short form of zulu Refer to Section 8.5.3 for more information on how to specify time zones. 8.5.1.3. Time Stamps Valid input for the time stamp types consists of the concatenation of a date

.................................................................................132 8.5.3. Time Zones ................................................................................................. of date/time input and for the recognized text fields including months, days of the week, and time zones. Remember that any date or time literal input needs to be enclosed in single quotes, like text strings for UTC z Short form of zulu Refer to Section 8.5.3 for more information on how to specify time zones. 8.5.1.3. Time Stamps Valid input for the time stamp types consists of the concatenation of a date

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327 Mapping cells to zones and regions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . with the target • To reduce bandwidth costs by skipping cells that are in different availability zones • Select cells where replica lags are lower 250 -tablet_types optional default replica A comma-separated with the target • To reduce bandwidth costs by skipping cells that are in different availability zones • Select cells where replica lags are lower -tablet_types optional default replica A comma-separated

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307 Mapping cells to zones and regions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . with the target • To reduce bandwidth costs by skipping cells that are in different availability zones • Select cells where replica lags are lower 238 -tablet_types optional default replica A comma-separated with the target • To reduce bandwidth costs by skipping cells that are in different availability zones • Select cells where replica lags are lower -tablet_types optional default replica A comma-separated

· · · · · · · · · · · · · · · · · · · · · · · 1675 12 Tutorials 1744 12.1 Multiple Availability Zones in One Region Deployment · · · · · · · · · · · · · · · · · · · · 1744 12.1.1 Raft protocol · · · deployment· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 1745 12.2 Three Availability Zones in Two Regions Deployment · · · · · · · · · · · · · · · · · · · · · 1752 12.2.1 Overview · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 1755 12.3 Two Availability Zones in One Region Deployment· · · · · · · · · · · · · · · · · · · · · · · · 1759 12.3.1 Introduction

region and availability zone of a node. The region is treated as the data center and the availability zones are treated as racks within the data center. For example, if a node is in us-east-1a, us-east is the the region and availability zone of a node. Regions are treated as data centers and availability zones are treated as racks within a data center. For example, if a node is in us-east-1a, us-east is the resource). For data redundancy, consider deploying your Cassandra cluster across multiple availability zones or using EBS volumes to store your Cassandra backup files. EBS volumes are not recommended for Cassandra

.................................................................................121 8.5.3. Time Zones ................................................................................................122 of date/time input and for the recognized text fields including months, days of the week, and time zones. Remember that any date or time literal input needs to be enclosed in single quotes, like text strings for UTC z Short form of zulu Refer to Section 8.5.3 for more information on how to specify time zones. 8.5.1.3. Time Stamps Valid input for the time stamp types consists of the concatenation of a date

.................................................................................131 8.5.3. Time Zones ................................................................................................. of date/time input and for the recognized text fields including months, days of the week, and time zones. Remember that any date or time literal input needs to be enclosed in single quotes, like text strings for UTC z Short form of zulu Refer to Section 8.5.3 for more information on how to specify time zones. 8.5.1.3. Time Stamps Valid input for the time stamp types consists of the concatenation of a date