Улучшенная производительность WITH {AUTONOMOUS|COMMON} TRANSACTION WITH CALLER PRIVILEGES ON EXTERNAL [DATA SOURCE] AS USER, PASSWORD и ROLE Параметризованные операторы Предостережения для оператора EXECUTE Зарезервированные слова; • Типы и подтипы данных; • Операторы DDL (Data Definition Language - язык создания данных); • Операторы DML (Data Manipulation Language - язык обращения с данными); • Операторы (2.5.1). • Новые не зарезервированные слова: AUTONOMOUS, BIN_NOT, CALLER, CHAR_TO_UUID, COMMON, DATA, FIRSTNAME, GRANTED, LASTNAME, MAPPING, MIDDLENAME, OS_NAME, SOURCE, TWO_PHASE и UUID_TO_CHAR

.......................................................................... 12 Choosing a Server Model ................................................................................................. Note in V.2.1 Metadata Need to be Upgraded If your databases contain text BLOBs storing non-ASCII data then the backup/restore cycle is not enough to upgrade them to ODS 11.1. Please pay attention to the (V.2.1) Malformed UTF8 strings and text blobs are no longer allowed. This affects not just user data but also the metadata stored in the system tables. There is a metadata script to enable you to upgrade

............................................................................... 366 ON EXTERNAL [DATA SOURCE] ........................................................................ 366 Особенности Зарезервированные и ключевые слова; • Типы и подтипы данных; • Операторы DDL (Data Definition Language — язык создания данных); • Операторы DML (Data Manipulation Language — язык обращения с данными); • Операторы управления NUMERIC(4) SMALLINT NUMERIC(4,2) SMALLINT (data * 102) NUMERIC(10,4) DOUBLE PRECISION в 1-ом диалекте BIGINT в 3-ем диалекте (data * 104) Внимание Всегда надо помнить

. . 22 3. Data Types and Subtypes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 3.1. Integer Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 3.2. Floating-Point Data Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 3.3. Fixed-Point Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . 24 3. Data Types and Subtypes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 3.1. Integer Data Types . . . Floating-Point Data Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 3.2.1. Approximate Floating-Point Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 3.3. Fixed-Point Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.............................................................................. 24 Protecting your data ................................................................................................. a database file can copy it, install it on a system under his or her own control, and extract all data from it – including possibly sensitive information. Anybody who has filesystem-level write access Aliases are listed in the file aliases.conf, in this format on Windows machines: poker = E:\Games\Data\PokerBase.fdb blackjack.fdb = C:\Firebird\Databases\cardgames\blkjk_2.fdb And on Linux: books =

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237 6. Data Manipulation-Statements (DML) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . gespeichert als INTEGER (exact data) DECIMAL(4,2) INTEGER (data * 102) DECIMAL(10,4) (Dialekt 1) DOUBLE PRECISION (Dialekt 3) BIGINT (data * 104) 3.4. Datentypen für Datum Typen "DATE", "TIME" und "TIMESTAMP". Der SQL-Standard ruft diese Datetime- Literale auf. Syntax <data_type> 'date_literal_string' Beispiel -- 1 UPDATE PEOPLE SET AGECAT = 'SENIOR' WHERE BIRTHDATE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8. Data Page — Type 0x05 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 8.2. Record Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.4. Examining The Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 8.4.1. Compressed Data. . . . . . . . . .

onwards. -M[ETA_DATA] This switch causes your data to be ignored and not backed up or restored. In a backup, only the database meta data are backed up. When used in a restore, any data in the dump file creating database clones which are required to contain only the tables, indices etc but none of the data. -PAS[SWORD] Supplies the password for the username specified above. This need not be file -CO[NVERT] backup external files as tables -E[XPAND] no data compression -FA[CTOR] blocking factor -G[ARBAGE_COLLECT) inhibit garbage

a single file database is simply the database name and for multi-file databases, it is the first data file added. Coming up in the remainder of this manual, we will discuss the following: • Command This makes the shadow file the new database file, and the users are able to continue processing data as normal and without loss. In the event that your main database file(s) become corrupted or unreadable the efficiency of the database performance. It is far quicker to read data from memory that it is to have to physically read the data from disc. The size of the database cache is dependent on the database