Uma instrução SQL correta para criar a tabela NOTAFISCAL apresentada no modelo é:
CREATE TABLE NOTAFISCAL (idNOTAFISCAL INTEGER NOT NULL, dataEmissao DATE NULL, PRIMARY KEY(idNOTAFISCAL));
CREATE TABLE NOTAFISCAL (idNOTAFISCAL INTEGER NULL AUTOINCREMENT, dataEmissao DATE NULL, PRIMARY KEY(idNOTAFISCAL));
CREATE SCHEMA NOTAFISCAL (idNOTAFISCAL INTEGER NOT NULL AUTO_INCREMENT, dataEmissao DATE NOT NULL, PRIMARY KEY(idNOTAFISCAL));
CREATE TABLE NOTAFISCAL (idNOTAFISCAL INTEGER NULL, dataEmissao DATE NOT NULL, CONSTRAINT UNIQUE KEY(idNOTAFISCAL));
CREATE TABLE NOTAFISCAL (idNOTAFISCAL INTEGER NULL CONSTRAINT PRIMARY KEY, dataEmissao DATE NULL);
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