Is the word data the same in Brazilian and European Portuguese?

Yes

The word "data" is identical in both Brazilian and Continental Portuguese regarding its meaning (a specific day, month, or year), its spelling, and its grammatical function (a feminine noun). The only differences are found in pronunciation:

• Brazilian Portuguese: The vowels are generally more open, and the rhythm of the word is often more melodic.
• Continental Portuguese: The vowels are more closed and "dull," and the unstressed syllables are pronounced much more subtly, creating a more stress-timed rhythm.

Brazilian Portuguese Examples

1. Qual é a data de hoje? (What is today's date?)
2. Eu esqueci a data da prova. (I forgot the date of the exam.)
3. Você pode confirmar a data da reunião? (Can you confirm the date of the meeting?)
4. A data de validade do leite passou. (The expiration date of the milk has passed.)
5. Preciso de uma data para a minha viagem de ônibus. (I need a date for my bus trip.)

Continental Portuguese Examples

1. Qual é a data de hoje? (What is today's date?)
2. Esqueci a data do exame. (I forgot the date of the exam.)
3. Podes confirmar a data da reunião? (Can you confirm the date of the meeting?)
4. A data de validade do leite expirou. (The expiration date of the milk expired.)
5. Não tenho uma data definida para apanhar o autocarro. (I don't have a defined date to catch the bus.)